Tag Archives: Comments

The more important posts in this blog – May 2014

Listed below are what I believe are the most notable posts at this blog, including the very first post at this blog from 2010, which is my description of an interesting phenomenon experienced by myself. This phenomenon, which was clearly related to face recognition and synaesthesia, sparked my curiosity and inspired this blog as a search for a convincing and full scientific explanation. I am so glad that I let curiosity get the best of me, and that I took the time to put my thoughts into words and share them with the world, because this has been a journey of discovery and intellectual adventure.

Like most things on the internet, this blog appears to be pretty-much archived by the Internet Archive (Wayback Machine), so feel free to use it to check and verify the content of these posts at various times in the past.

There have been a number of very interesting comments from readers at this blog, some noting their own experiences of types of synaesthesia previously undescribed by science which are similar to my experiences, and even one other apparent super-recognizer synaesthete. I have also been fortunate to receive some comments from people who are notable within the world of human facial recognition research. I have given posts that have attracted interesting comments the tag “Comments”, so if you click on the tag in this post, that will show you posts that have comments.

The more important posts:

A Most Peculiar Experience (my description of The Strange Phenomenon) https://superrecognizer.wordpress.com/2010/12/04/a-most-peculiar-experience/

Is synaesthesia caused by low levels of complement? Is Benson’s syndrome (PCA) caused by too much complement C3? Could synesthesia and posterior cortical atrophy be considered in some way opposites?  https://superrecognizer.wordpress.com/2012/06/07/is-synaesthesia-caused-by-low-levels-of-complement-is-bensons-syndrome-caused-by-too-much-complement-c3/

Some ideas that I’d like to (explicitly) lay claim to (right now) in 2014  https://superrecognizer.wordpress.com/2014/01/09/some-ideas-that-id-like-to-explicitly-lay-claim-to-right-now-in-2014/

Have my ideas been plagiarized in a paper published in a neuroscience journal? I believe they have.  https://superrecognizer.wordpress.com/2013/10/27/when-researchers-steal-your-ideas-i-guess-at-least-thats-some-form-of-validation/

Super-recognizer jobs? (This is the most popular post at this blog)  https://superrecognizer.wordpress.com/2012/08/08/super-recognizer-jobs/

Other cases of synaesthesia involving face perception – I’m certainly not the only one https://superrecognizer.wordpress.com/2012/05/06/other-cases-of-synaesthesia-involving-face-perception-im-certainly-not-the-only-one/

Involuntary Method of Loci Memorization (IMLM) – what the heck is that? https://superrecognizer.wordpress.com/2011/03/09/involuntary-method-of-loci-memorization-imlm-%e2%80%93-what-the-heck-is-that/

The Opposite of Benson’s Syndrome? https://superrecognizer.wordpress.com/2011/01/04/the-opposite-of-bensons-syndrome/

Report on my fine motor task -> visual place memory synaesthesia https://superrecognizer.wordpress.com/2011/02/20/report-on-my-fine-motor-task-visual-place-memory-synaesthesia/

My Brain Put to the Test https://superrecognizer.wordpress.com/2010/12/22/my-brain-put-to-the-test/

Science Week 2011 – The world of science and me in the past year https://superrecognizer.wordpress.com/2011/08/17/science-week-2011-%e2%80%93-the-world-of-science-and-me-in-the-past-year/

Reflections on The Strange Phenomenon, how I gunned the CFMT, letter personification in advertising and clue to a possible cure for some cases of prosopagnosia after reading an old journal paper https://superrecognizer.wordpress.com/2011/08/04/reflections-on-the-strange-phenomenon-gunning-the-cfmt-letter-personification-in-advertising-and-clue-to-a-possible-cure-for-some-cases-of-prosopagnosia-after-reading-an-old-journal-paper/

A brief report on my synaesthesia experiences that involve concepts as triggers or evoked experiences https://superrecognizer.wordpress.com/2011/03/11/a-brief-report-on-my-synaesthesia-experiences-that-involve-concepts-as-triggers-or-evoked-experiences/

A type of synaesthesia which I experience in which non-food words or names automatically evoke the concepts of particular foods: is lexical-gustatory synaesthesia an evolutionary adaptation? https://superrecognizer.wordpress.com/2011/01/27/a-type-of-synaesthesia-which-i-experience-in-which-words-or-names-automatically-evoke-the-concepts-of-particular-foods/

 

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Once again, super-recognizers to be found in comments

There are comments from people who claim to have super-recognizer ability at the below-linked article about prosopagnosia at the Australian online magazine for an educated readership The Conversation. One of the super-recognizers is apparently an inherited case with a parent who had the same level of ability.

The Australian Prosopagnosia Register or Australian Prosopagnosia Participant Register was mentioned in the article, which is a register for people who wish to participate in research and also suspect that they are inborn cases of prosopagnosia. This register appears to be maintained by Macquarie University.

The English celebrity Stephen Fry was identified as one of a number of famous prosopagnosics, based in a Tweet that he wrote, claiming to be a “mild” case. This is interesting because there is some indication that Fry also experiences colours for the days of the week which is a type of synaesthesia, and the gay actor has also been diagnosed with one of the milder categories of bipolar, following a bad reaction to some quite severe bullying. I would want to be more certain of all of these diagnoses before speculating about any possible causal link between them.

I should know you: ‘face blindness’ and the problem of identifying others. by Romina Palermo The Conversation. August 16th 2012. https://theconversation.com/i-should-know-you-face-blindness-and-the-problem-of-identifying-others-8884

Australian Prosopagnosia Participant Register  https://www.maccs.mq.edu.au/research/projects/prosopagnosia/register/

The more important posts in this blog

There have been many very interesting comments from readers at this blog, noting their own experiences of types of synaesthesia previously undescribed by science which are similar to my experiences, and even one other apparent super-recognizer synaesthete. I have also been fortunate to receive some comments from people who are famous within the world of human facial recognition research. I have given posts that have attracted interesting comments the tag “Comments”, so if you click on the tag in this post, that will show you posts that have comments.

A Most Peculiar Experience (my description of The Strange Phenomenon) https://superrecognizer.wordpress.com/2010/12/04/a-most-peculiar-experience/

Other cases of synaesthesia involving face perception – I’m certainly not the only one  https://superrecognizer.wordpress.com/2012/05/06/other-cases-of-synaesthesia-involving-face-perception-im-certainly-not-the-only-one/

Involuntary Method of Loci Memorization (IMLM) – what the heck is that? https://superrecognizer.wordpress.com/2011/03/09/involuntary-method-of-loci-memorization-imlm-%e2%80%93-what-the-heck-is-that/

The Opposite of Benson’s Syndrome? https://superrecognizer.wordpress.com/2011/01/04/the-opposite-of-bensons-syndrome/

Report on my fine motor task -> visual place memory synaesthesia https://superrecognizer.wordpress.com/2011/02/20/report-on-my-fine-motor-task-visual-place-memory-synaesthesia/

My Brain Put to the Test https://superrecognizer.wordpress.com/2010/12/22/my-brain-put-to-the-test/

Science Week 2011 – The world of science and me in the past year https://superrecognizer.wordpress.com/2011/08/17/science-week-2011-%e2%80%93-the-world-of-science-and-me-in-the-past-year/

Reflections on The Strange Phenomenon, how I gunned the CFMT, letter personification in advertising and clue to a possible cure for some cases of prosopagnosia after reading an old journal paper  https://superrecognizer.wordpress.com/2011/08/04/reflections-on-the-strange-phenomenon-gunning-the-cfmt-letter-personification-in-advertising-and-clue-to-a-possible-cure-for-some-cases-of-prosopagnosia-after-reading-an-old-journal-paper/

A brief report on my synaesthesia experiences that involve concepts as triggers or evoked experiences https://superrecognizer.wordpress.com/2011/03/11/a-brief-report-on-my-synaesthesia-experiences-that-involve-concepts-as-triggers-or-evoked-experiences/

A type of synaesthesia which I experience in which non-food words or names automatically evoke the concepts of particular foods: is lexical-gustatory synaesthesia an evolutionary adaptation? https://superrecognizer.wordpress.com/2011/01/27/a-type-of-synaesthesia-which-i-experience-in-which-words-or-names-automatically-evoke-the-concepts-of-particular-foods/

Don’t forget the parietal lobe – the connections are interesting

If you have been reading this blog for a long time you’d know I’ve been trying to figure out which parts of my brain are responsible for my synaesthesia and related experiences. I’ve found that the right fusiform gyrus is a part of the brain that comes up over and over again, in relation to synaesthesia and also face recognition I experience many types of synaesthesia and also have achieved scores in face recognition tests consistent with being a super-recognizer, so this combination seems significant, and despite a lack of any evidence from other case studies linking synaesthesia with superior ability in face recognition, I still think it is a possible relationship that should be scientifically investigated, especially in light of a pattern of associations which I believe suggests that synaesthesia might be a neuropsychological condition that could be seen as the opposite of Benson’s syndrome, which is a type of dementia that involves a loss of visual perception, apparently including a loss of face recognition ability. While synesthesia is generally an inborn developmental condition, and Benson’s or PCA a neurodegenerative condition with a typical onset late in life, I’ve still got to wonder whether inborn factors contribute towards Benson’s. While Benson’s is considered to be a variant of Alzheimer’s, I don’t think anyone knows why it causes deterioration in different areas of the brain as are affected by Alzheimer’s, apparently the same parts of the brain (at the rear) that appear to be enhanced or hyperactive in my brain, and I also doubt that anyone knows why Benson’s has an onset earlier than Alzheimer’s disease. I’m sceptical of the idea that Benson’s is just Alzheimer’s of the back-end of the brain. I suspect that immune system elements microglia and complement might be central to an explanation for Benson’s syndrome. Reading Dr B. Croisile’s paper about Benson’s I’m struck by the many very strange effects of Benson’s on perception, and I wonder at the ways in which a study of it might inform science about  the workings of the brain. I think it is at least as interesting as synaesthesia, which attracts a lot of attention from researchers. Apparently people with Benson’s cannot imitate movements. Does this mean that the mirror-neuron system which so many neuroscientists have gotten so excited about is located at the rear of the brain? I note that the inferior parietal cortex is one of the parts of the brain that are thought to house mirror neurons.

When I set out to write this post I had actually planned to write about a fairly recent review journal paper focusing on recent research about the most common and well-known types of synaesthesia: coloured hearing, coloured graphemes and time units in space synaesthesia. I really like the paper cited below by Professor Karsten Specht from the University of Bergen in Norway, and I’d recommend it to anyone who wants to learn about the latest knowledge about synaesthesia from just one paper. I only have a couple of gripes about he paper. I wouldn’t describe synaesthesia as “rare” as Specht does. Ward, Sagiv and Butterworth wrote in 2009 that around 12% of the population have number forms, and that estimate doesn’t surprise me. Synaesthesia in general can’t be rare if it includes one type that isn’t rare. Time-space synaesthesia or number forms is one type of synaesthesia which the synaesthete can have but not suspect that it is synesthesia, or anything out of the ordinary, so I’d guess it could be very much under-reported and under-estimated. My other gripe with Professor Specht’s paper is this bit; “In recent years, several studies have attempted to investigate whether synaesthesia is primarily a perceptual or conceptual phenomenon.” I think Specht is here presenting the reader with a false dichotomy. In some of the types of synaesthesia and related phenomena which I experience sensory perception, memory and conceptual thinking are connected with synaesthesthetic linkages, so I doubt that there is much point in trying to characterise synaesthesia as one or another type of phenomenon. I was very excited when I read the book Beyond Human Nature by philosopher Jesse Prinz. Professor Prinz argued that we think in mental images rather than in language. He wrote that “It used to be thought that the back part of the brain is used for perceiving and the front is used for thinking. But we now know that the back part of the brain, where most of the senses are located, is very active when people think. Moreover, we know that the front part of the brain does not work on its own, but rather coordinates and reactivates sensory patterns in the back. Recent evidence from Linda Chao and Alex Martin has shown that reading activates the same areas as looking at pictures, suggesting that we visualize what we read.” In a post that I wrote a while ago I described involuntarily “seeing” in my mind’s eye visual images of landscapes and building interiors from imagination and memory while listening to an autobiographical audio-book. I thought it was probably related to synaesthesia, but it appears that everyone’s brain illustrates text with images when reading. Perhaps synaesthetes do this to a greater degree or in a way that is more available to conscious awareness.

Anyway, back to Specht’s paper. Having read it I now suspect that the parts of my brain that are bigger or better connected or more active or something are: the right fusiform gyrus (including the FFA), the left parietal lobe including the left intraparietal sulcus, the right inferior parietal lobe, the hippocampus (I’m sure is involved with IMLM) and the parahippocampal gyrus. I’d guess that these are the places where interesting things are happening. It appears that the role of the parietal lobe in synaesthesia has been understated in the past. It is now thought that synaesthesia does not solely involve the cross-activation of two different sensory areas (as if it was ever that simple!), but it also requires a “binding” process to happen in the parietal lobe. There is no underestimating the importance of this binding.

If you are as interested in synaesthesia and bits of the brain as I am, you might also like to read a much longer journal paper by Rouw, Scholte and Colizoli that was published last year. It is available in full text at no cost, but I don’t think it covers non-colour types of synaesthesia. Details can be found below. One part of the parietal lobe mentioned in that paper, which is cited by a few studies as involved with synaesthesia is the inferior parietal lobule (IPL, Brodmann areas 39 and 40). It is also known as Geschwind’s territory because the neurologist Geschwind predicted in the 1960s that the parietal lobe played a role in language, and was proven right when the IPL was found to include a second connection between Broca’s area and Wernicke’s area, which are of central importance in language. The IPL is very interesting as a part of the brain involved in synaesthesia because according to a 2004 article in New Scientist magazine the IPL matures at a late age, between the ages of five and seven years, which just happens to be time in life when children typically learn the ability to read and write, and it is also the age range in which some children develop grapheme-colour synaesthesia. I find this very interesting because in my family we have at least three closely related grapheme-colour synaesthetes who are unusually high achievers in reading and writing in testing and academic achievement. Two of these synaesthetes were early readers and also talented at language learning. What’s the betting that some gene that alters the development of the IPL is behind this? The author of the most interesting little science magazine article that brought me this news, Alison Motluk, is herself a synaesthete. Is it just a coincidence that a journalist with a well-connected brain has pointed out a number of interestingly related facts that are connected around the conceptual hub of the inferior parietal lobule?

Specht, Karsten Synaesthesia: cross activations, high interconnectivity, and a parietal hub. Translational Neuroscience. Volume 3 Number 1 (2012), 15-21, DOI: 10.2478/s13380-012-0007-z
http://www.springerlink.com/content/512306132j162437/

Croisile, Bernard Benson’s syndrome or Posterior Cortical Atrophy. Orphanet. September 2004. http://www.orpha.net/data/patho/GB/uk-Benson.pdf

Ward, Jamie, Sagiv, Noam and Butterworth, Brian The impact of visuo-spatial number forms on simple arithmetic. Cortex. Volume 45 Issue 10Pages 1261-1265 (November 2009). http://www.cortexjournal.net/article/S0010-9452(09)00213-5/abstract

Rouw, Romke, Scholte, H. Steven, Colizoli, Olympia Brain areas involved in synaesthesia: A review. Journal of Neuropsychology. Special Issue: Synaesthesia. September 2011 Volume 5 Issue 2 p.214-242. Article first published online: 16 SEP 2011 DOI: 10.1111/j.1748-6653.2011.02006.x  http://onlinelibrary.wiley.com/doi/10.1111/j.1748-6653.2011.02006.x/full

Motluk, Alison Two links good for kids’ language comphrehension. New Scientist. Issue 2478. December 18th 2004. p.12. http://www.newscientist.com/article/mg18424784.300-second-link-discovered-in-human-language-circuit.html

Added an afterthought to a recent post

Did the police and everyone else get it wrong? http://wp.me/p1dnAW-qH

Another aspect of interest in the above linked post is one comment in it, which is off the topic of the post, but I don’t mind. It is a comment from Michael who wrote that he experiences a type of coloured face / aura synaesthesia that involves emotions, similar to the other fascinating cases described in the synesthesia study by Spanish researchers published this March in the journal Consciousness and Cognition, which I wrote about in a post at this blog, and would like to find the time to write more about, but probably wont.

Other cases of synaesthesia involving face perception – I’m certainly not the only one.  https://superrecognizer.wordpress.com/2012/05/06/other-cases-of-synaesthesia-involving-face-perception-im-certainly-not-the-only-one/

Was that a comment from super-recognizer Jennifer?

I refer to the recent comment on the post “Woo Hoo! A test specifically for super-recognizers from CBS 60 Minutes”

Woo Hoo! A test specifically for super-recognizers from CBS 60 Minutes

Are you a “super-recognizer”? Take a test. 60 Minutes. CBS News. March 18, 2012. http://www.cbsnews.com/video/watch/?id=7402555n&tag=segementExtraScroller;housing

158 interesting comments here:  http://www.cbsnews.com/8601-504803_162-57399111.html?assetTypeId=41&blogId=10391709&tag=postComments;commentWrapper

I think the test presented in this video is an excerpt from the Before They Were Famous Test, a test which I’ve been trying to gain access to since September 2010. The full test has 56 photos of famous people, with super-recognizers typically correctly identifying less than 32 of those, so it is certainly a test to sort out people at the highest end of the spectrum of ability. There are a total of 17 photos of famous British or American people presented in this video. Out of the 17 I was totally unfamiliar with 6 of the famous people (I’ve lived in Australia all my life and have limited interest in recent and obscure US celebrities). I never knew them from a bar of soap. Of the 11 celebrities whom I am familiar with, I identified 5 of them correctly while doing the test at the same pace as the video playing, missing 6 of the famous faces that I do know. I think I could have picked the face of Nancy Reagan if her face had been shown in a close-up, not a long-shot, a few seconds before the video revealed her identity. As soon as someone tells you who a known person is in a photo it is usually impossible not to see who they are, so I didn’t count Nancy Reagan as a hit. Her face is very distinctive, even as a young girl. I don’t think I can conclude anything much about me from my score, because as an Aussie I don’t think my score can be compared with American people taking the test, but it was a bit of fun.

The video features Jennifer Jarett tackling the test in fine form. I’m pretty sure that she was one of the first a super-recognisers to be identified by science, in a journal paper published in 2009. She has also been the subject of a 2009 article in the New York Times.

If you think you might be a super-recognizer and you also wish to do testing to see if this is true, I believe you would need to do both the full Before They Were Famous Test (with the caution that cultural differences might affect your score) and also the clinically credible Cambridge Face Memory Test (CFMT), prefereably the long form, which was created by researchers from Harvard University in Cambridge, Massachusetts and University College in London. The short form of the CFMT was once freely available to do at a number of places on the internet, but now I believe this autism study at MIT (Massachusetts Institute of Technology) is the only place where you might access it for free: http://facetoface.mit.edu/

Science magazine article about new “sparse representation” technique in facial-recognition software

This brief article is fully available free online, (which is great), so there’s no point me going over it as you can read it if you wish. This new technique in face recognition technology is different to the existing techniques that are based on the face as a whole. How these man-made technologies compare to natural human face recognition I’m not sure. I wonder whether the human brain actually uses a number of different approaches to face recognition?

Software could spot face-changing criminals by Jacob Aron New Scientist Issue 2847 18 January 2012 p. 18-19.
http://www.newscientist.com/article/mg21328476.300-software-could-spot-facechanging-criminals.html

Are the flashbacks that are an element of Post-Traumatic Stress Disorder a troublesome variety of synaesthesia and/or related to the Tetris effect?

I’m going to explain why I think this question is worth considering.

I have recently been reading a most interesting book that has been descibed as a “medical memoir”. I have read that the fiction writer Siri Hustvedt has mirror-touch synaesthesia, and I was rather interested in reading about that, but the main topic of Hustvedt’s book The Shaking Woman is her search for an explanation for her seizure-like shaking episodes that are triggered by public speaking.

One thing that I’ve noted is that both Siri and her late father have experienced PTSD-type flashbacks of traumatic memories (warfare, car accident). Like myself, Siri Hustvedt has also experienced the Tetris effect, which is like PTSD flashbacks in that it is an involuntary experience of a visual memory. I don’t experience the Tetris effect much these days, but when I do it is typically in response to a full day of weeding or some other outdoor repetitive work. I don’t think scientists know how common the Tetris effect is, and if it is a thing that everyone experiences then it wouldn’t mean a thing that the novelist and I both experience it. I have at least one other close blood relative who has also experienced the Tetris effect quite a few times. The Tetris effect operates through an unknown memory system, possibly related to procedural memory, according to the Wikipedia. I would think that the Tetris effect would have some type of visual memory system as its basis. It is interesting that Hustvedt’s mysterious shaking episodes were dampened-down but not completely cured by the drug propranolol, which (according to the book) is also used to treat high blood pressure, migraine, performance anxiety and PTSD. Hustvedt seems to have a lot of whatever mechanism is the basis of PTSD, which I guess might be a very strong or hyperconnected visual memory system in her brain. I would think this system is also probably responsible for the Tetris effect. Another reason to believe that the Tetris effect and PTSD operate in the same brain system is that a study described in the Wikipedia found that playing a Tetris-like video game soon after a traumatic event “….reduces the number of flashbacks that are experienced afterwards”. I guess a specific memory system becomes overloaded with memories if the game is used as preventative treatment, so less of the traumatic memories can be encoded properly for long-term storage.

Hustvedt and I have quite a few things in common. We are both synaesthetes, we have both experienced the Tetris effect, we have also both experienced and migraine headaches, and we have both apparently had brain-based experiences of involuntarily-retrieved visual memories. In her book Hustvedt did not spell out explicitly that her flashbacks included visual content, and she did mention the memory of sound, but I’m happy to assume that anything labelled as a “flashback” included visual content. My involuntarily-retrieved visual memories are two different types of synaesthesia which I’ve experienced which trigger visual memories of scenes or a face. Hustvedt’s shaking episodes are like synaesthesia in that they have a very specific trigger (public speaking) and a very specific manifestation (violent body tremors without apparent anxiety, or under the influence of propranolol, an “electric buzz” quiver throughout the body).

There seem to be a lot of things here that are inter-connected. My experiences of my fine-motor->visual memories of scenes synaesthesia and The Strange Phenomenon, which is I believe a hybrid of face recognition and synaesthesia in which seeing one face under very specific conditions triggers an involuntary experience of a very old memory of the face of another person, show that synaesthesia concurrents or triggered additional sensory experiences can be in some ways similar to PTSD flashbacks, but without any accompanying psychological distress. My fine-motor-triggered visual memories are very subtle and hardly noticeable, while the face memory evoked in The Strange Phenomenon is more of an intrusion into ordinary consciousness. I’d like to put forward the theory that the flashbacks of PTSD (and not any of the other distressing features of PTSD) are synaesthesia concurrents that just happen to be distressing visual or sensory memories. I guess they must have some type of trigger, and I guess could be something purely sensory, very subtle or ordinary. I have never experienced PTSD myself, probably because I have fortunately never been in the type of extremely traumatic situation that causes this psychological syndrome, so I can only guess at what PTSD flashbacks are really like from what I’ve read. Are PTSD flashbacks the result of a type of synaesthesia that can manifest as quite a subtle experience, but are only troublesome or exceptional because of the very unpleasant nature of the memories evoked? Are synaesthetes more likely to develop PTSD if exposed to trauma than non-synaesthetes exposed to equivalent situations? It’s just a theory!

Wikipedia contributors Tetris effect. Wikipedia, The Free Encyclopedia. http://en.wikipedia.org/w/index.php?title=Tetris_effect&oldid=448999724

The Shaking Woman. The Book Show. Radio National. April 22 2010.  http://www.abc.net.au/rn/bookshow/stories/2010/2878610.htm

Synaesthesia linking concepts with scenes – maybe not so hard to explain, and maybe not really so strange?

I have recently been reading the chapter about synaesthesia in V. S. Ramachandran’s latest book about neuroscience, and among many other interesting things Ramachandran explained that some simple concepts are processed in the temporal lobes. This is the general part of the brain that I believe is hyper-developed or hyper-connected in my case, and it is the part of the brain in which the fusiform gyrus is located, where the recognition of faces, bodies, scenes, numbers and words is done, and colour is processed. I know as the result of testing that I have an above-average ability in face recognition, possibly in the super-recognizer class, and I also experience types of synaesthesia that involve faces, scenes, colours, words, letters and numbers, so I think I’m on solid ground when I assert that there is something interesting about my fusiform gyrus. Like many synaesthetes I also experience synaesthesia triggered by listening to music, and I believe that appreciating music has an unusual prominence in the lives of me and some of my synaesthete relatives. This type of thing is thought to be associated with the temporal lobes which do auditory processing among many other things, so I believe that whatever is different about my fusiform gyrus or (gyri?) is not limited to it but extends into the temporal lobes. So I was particularly interested that the processing of simple concepts goes on in the temporal lobe, because another type of synaesthesia that I experience links concepts with visual scenes which are processed in the fusiform gyrus in the temporal lobes. If these concepts are also processed in the temporal lobes, that would be another type of synaesthesia of mine that is a purely intra-temporal lobe phenomenon, and therefore a scientific explanation of many of the synaesthesia experiences of mine could be explained in one very short phrase; bushy temporal lobes. But I’m not completely sure that the types of concepts that my mind links with scenes are the same type of thing that goes on in the temporal lobes. This is the passage from page 104 of the book The Tell-Tale Brain by V. S. Ramachandran:

“Brain damage can make a person lose the ability to name tools but not fruits and vegetables, or only fruits and not tools, or only fruits but not vegetables. All of these concepts are stored close to one other in the upper parts of the temporal lobes, but clearly they are sufficiently separated so that a small stroke can knock out one but leave the others intact. You might be tempted to think of fruits and tools as perceptions rather than concepts, but in fact two tools – say, a hammer and saw – can be visually as dissimilar from each other as they are from a banana; what unites then is a semantic understanding about their purpose and use.”

This is a list of some of the concepts that are involved with the concept->scene synaesthesia of mine:
the concept of a bad “state housing” area that one could conceivably find one’s self living in if one’s life went to hell
the concept of Charles Darwin
the concept of Charles Darwin coming to terms with the death of a child
the concept of adoption
the concept of doing one’s own tax return
the concept of cooking with lard
the concept of Bettina Arndt
the concept of the toy the sketch-a-graph.

These concepts aren’t quite as simple as the conceptual categories of “fruits” or “tools”. Is this really the same type of conceptual thinking as that described by Ramachandran? I really don’t know. Maybe I would have more of a clue if I could find the time to read through an interesting-looking paper that I have found on the internet; The Representation of Object Concepts in the Brain by
Alex Martin. I’ve had a quick look at the paper, and I have spotted a couple of interesting things on page 32, a truly amazing misspelling of the word “synaesthete” and what appears to be confirmation that different types of grapheme -> colour synaesthesia involve different parts of the brain. I’m betting that my grapheme -> colour synaesthesia involves the ventral temporal cortex rather than sites in the occipital cortex, because for me the colours of the alphabet are experienced as knowledge of the colours of letters more than a perception of the colours of letters. This doesn’t make the experience any less real or specific. I can still “see” the colours very clearly in my mind’s eye.

I’ve had some thoughts about my concept -> scene and scene -> concept synaesthesia, and I think it could be the case that it only seems to be a strange and nonsensical way of thinking because it has been taken out of the context in which it evolved, and placed into this abstracted, complex, high-speed modern world that we live in. As I have previously observed, often there is a semantic relationship between the place seen in the scene and the concept, and sometimes the scene is of a place that I visited or frequented during the period of time when I was introduced to the concept or was thinking intensively about that concept. This would appear to be a completely useful and sensible way to think, with a thought triggering a real and visible scene illustrating and spatially locating the concept. Maybe a pre-historic human thinking with this type of synaesthesia might experience an appetite for a particular type of seafood, and then in her mind, helpfully, in response to the concept of that specific type of seafood, flashes the scene of the exact beach where she previously went hunting successfully for that particular seafood delicacy. I’ve had a little bit of experience hanging out with fishermen who knew what they were doing, and I know that catching a fish often requires knowing and doing exactly the correct thing – being in the right place at the right time with exactly the right bait and tackle for the specific thing that you are hunting. Casual attitudes and fuzzy thinking don’t get results. The exact nature of synaesthesia seems to fit in with this type of task. In the stable, predictable world of the hunter-gatherer in which there isn’t much abstract thinking to complicate life, this type of synaesthesia could possibly be a most useful tool of the mind, retrieving memories of exact locations just when they are required. One has to wonder if this type of thinking would have been so useful that everyone should have evolved to have it. Was synaesthesia the norm rather than the exception in early humans? Is my mind an atavism, or could it be a souvenir of a liaison between Homo sapiens and the Neanderthal race? Or is it true that this phenomenon isn’t synaesthesia at all, but a completely normal synaesthesia-like thing that is so ordinary that people don’t notice or discuss it?

Having a mind that automatically connects concepts with scenes might have been a very useful and sensible thing in the early times of our species, but when we link concepts with scenes in a mind that is living in the modern industrialized world, things can start to look a bit weird, because there has been an explosion of more abstract thought and complex learning, bringing with it a massive range of possible concepts to think about. In prehistoric times there were no tax returns or underclass suburbs or female sex therapists with gruff voices and high media profiles. It’s a strange old world that we live in, and as synaesthesia involves our thoughts and perceptions of this world, it should probably look just as strange.

References

A brief report on my synaesthesia experiences that involve concepts as triggers or evoked experiences https://superrecognizer.wordpress.com/2011/03/11/a-brief-report-on-my-synaesthesia-experiences-that-involve-concepts-as-triggers-or-evoked-experiences/

Martin, Alex The Representation of Object Concepts in the Brain. Annual Review of Psychology. 2007. 58:25–45.
First published online September 1, 2006.
The Annual Review of Psychology is online at http://psych.annualreviews.org
This article’s doi: 10.1146/annurev.psych.57.102904.190143
http://psychology.stanford.edu/~jlm/pdfs/MartinAnnRevPsych07.pdf

Ramachandran, V. S. The tell-tale brain: unlocking the mystery of human nature. William Heinemann, 2011.