Tag Archives: Scene Memory

Surprising explanation for why face recognition matures unusually late in human development!

I didn’t expect to be reading this but I can recognize that this discovery seems to explain why face recognition is human cognitive ability that hits its peak surprisingly late in human development, and I’m now wondering how this fits into my theories about the relationship between my super-recognition and my synaesthesia, and that includes wondering how this discovery fits with my immune hypothesis of synaesthesia (which is all about pruning rather than proliferation), and of course I’m wondering how this fits in with what is known about super-recognizers. I guess I should just calm down and read the full text.

Coghlan, Andy Brain’s face recognition area grows much bigger as we get older. New Scientist. January 5th 2017.
https://www.newscientist.com/article/2117259-brains-face-recognition-area-grows-much-bigger-as-we-get-older/

Jesse Gomez, Michael A. Barnett, Vaidehi Natu, Aviv Mezer, Nicola Palomero-Gallagher, Kevin S. Weiner, Katrin Amunts, Karl Zilles, Kalanit Grill-Spector Microstructural proliferation in human cortex is coupled with the development of face processing. Science. January 6th 2017.

http://science.sciencemag.org/content/355/6320/68

 

A memory walk through Cottesloe of the past

I never miss reading Robert Drewe’s column The Other Side in the Westweekend liftout of Saturday’s West Australian newspaper every week, because I have come to love the city that I grew up in and live in, and Drew’s pieces either provide a good laugh or an insight into the history of Perth, often both.

I couldn’t help noticing that in last week’s piece (June 13th 2015), Drewe describes some experiences that are a version of the method of loci memory technique. He writes of experiencing visual memories of past scenes of now-demolished Perth landmarks as he travels past the locations where they once served the people of Perth. Hamburger vendors on Mounts Bay Road and the Cottesloe foreshore are some examples given. I’m sure such experiences are common, and this is why anyone is able to exploit this type of memory experience using this ancient technique for memorizing a sequence of items encoded as visual memories. I have a special interest in the method of loci as I was I believe the first to describe, at this blog, a spontaneous experience experienced by myself and synaesthete kin in which we spontanously encode synaesthesia-like associations between concepts and visual memories of scenes, in a way that is similar to, but not the same as, the method of loci. My theory is that us synaesthetes have a greater tendency to memorize than most people, to the degree that we encode very robust long-term memories unintentionally and spontanously, just from being a passenger in a moving vehicle vacantly looking at passing scenery while listening to interesting news or stories on the car radio.

Drewe’s column unearths lost memories for readers week after week, which accounts for it’s appeal, so it is no surprise that his writing strikes a resonance with a piece that I wrote for this blog a while ago, detailing my inner visions of past year’s displays overlaying the current year’s display at specific well-used display sites at the annual Sculpture by the Sea exhibition at Cottesloe Beach. Like Drewe, I can’t be at that spot on the Cottesloe foreshore without “seeing” Van Eileen’s hamburger joint, with the semi-circular deeply sandy and untidy carpark area surrounding it. The odd thing is that my memory of how that spot is currently landscaped does not come to mind with any ease. Even if I was there, at that very spot, right now, I suspect that the green and well-tended vista would not seem quite as real as the memory, with associated sand in my shoes. It isn’t the real Cottesloe.

Too exciting! Nobel Prize awarded for research on stuff that I’ve been writing about here

Visual recognition of places or scenes, mental navigation, a sense of place and the normal mental memory function that is the basis for the “method of loci” memory technique are some of the interesting psychological subjects that I have written about here, and it appears that my interests very much overlap with the areas of research pioneered by John O’Keefe and May-Britt and Edvard Moser, all winners of the 2014 Nobel Prize for Medicine. This team spent a great part of their careers doing research on rats, and their discoveries include grid cells and “place cells” which are nerve cells in the hippocampus that only activate when the rat is in a specific physical location. I’m not clear whether the grid cells and the place cells are the same thing or not. Read about their fascinating and important research here.

I’m feeling very frustrated right now as I am sure that somewhere in this blog I’ve written a description of an experience that I occasionally have while travelling in a train in unfamiliar lines or at night, in which it appears that two different mental navigational systems in my brain go “out of sync” causing a temporary sense of confusion about where I am. One of these navigational systems is based on visual perception of scenes while the other is based on a body-centred, visceral, embodied, spatial, sense of direction, and the common language “spoken” between these two systems is the visual memory of scenes, (which is of interest in my case because this function is encoded in pretty-much the same part of the brain as face memory, and I’m a super-recognizer). Normally the visual perception of scenes system informs and regularly updates the directional sense system, and the directional system accesses a sequentially-encoded system of visual memories of places and then sends predictions about expected scenery back to the visual system. Sometimes when visual scene recognition operates at the edges of ability and fails to provide input to or misinforms the directional system, the directional system works in an uncertain and speculative way, and at times is confronted with input of visual scenes that do not fit the predictions of expected scenery sent from the scene memory bank. This is the “spin-out” moment. Following this head-spinning moment of confusion is a sense of “Where the f*** are we?”, and my sense of navigation will either be reset from a combination of conscious knowledge of direction combined with visual memories of scenes or fresh comprehensible visual input. This is my interpretation of these types of experiences, which I believe are interesting and can inform us about normal mental navigation. I am very conscious of visual memories of scenes because I experience a number of types of synaesthesia in which these memories are either inducers or concurrents. I believe I am the first person in the world who has taken the time to write and publish full descriptions of these experiences, here at this blog. I have asserted that one of these types of synaesthesia is the same or very similar to the very powerful and ancient method of loci memory technique, which involves activation of a number of parts of the human brain, including the hippocampus.

Just discovered that there are psychologists who study involuntary autobiographical memories (IAMs)

Involuntary autobiographical memories are of special interest to me because I experience visual memories of scenes, a face, complete personalities of real people from my past and autobiographical memories of learning about specific concepts as synaesthesia concurrents, which means that when I encounter experiences that trigger these synaesthesias I involuntarily experience one of these types of IAMs. So, one could say that at least for me the IAM experience is just another broad category of synaesthesia that I experience. So does that mean that the IAM experiences of people thought to not be synaesthetes are in fact also synaesthesia, or are the resemblances between our experiences just superficial? At this blog I have previously described types of synaesthesia experienced by me that are triggered by performing over-learned fine motor movements (housework and grooming manual chores) which have concurrents that are visual memories of scenes of locations or learned concepts. I have also noted that my random uncontrolled thoughts become more creative and fluent with greater accessibility to concepts and memories while I am performing spatial-movement tasks such as showering or driving or walking. So I was rather astounded when I read this in a paper about IAMs from The Psychologist from a year ago:

“IAMs occur spontaneously without any deliberate intention to recall anything. In fact they are most likely to occur when individuals are engaged in regular, automatic activities that are not attentionally demanding, such as walking, driving or eating.”

Actually, these activities are attentionally demanding, but maybe not demanding on the conscious, verbal parts of the brain. I think the thing that really matters about these tasks are that they are spatial-motor tasks which activate the parietal lobe, which just also happens to be a region of the brain that plays a central role in many cases of synaesthesia. My theory is that there is a category of IAMs which are a subtype of synaesthesia in which experiences that are obviously autobiographical memories are the synaesthesia concurrents and motor-spatial processes are the synaesthesia inducers. I have also previoiusly put forward the theory that synaesthesia concurrents are actually memories of one or another type, rather than randomly and mysteriously generated experiences or sensory experiences.

I believe that IAMs cannot be studied or understood without the study and knowledge of synaesthesia, because many instances of IAMs are synaesthesia of one type or another, and the whole IAM phenomenon is very similar to synaesthesia in the way it works. Despite my observations, in the paper in The Psychologist by Bradley, Moulin and Kvavilashvili I could find no mention of synaesthesia at all. I think there is a lot of work to be done in this area of research.

Rosemary J. Bradley, Chris J.A. Moulin and Lia Kvavilashvili Involuntary autobiographical memories. Psychologist. March 2013 Volume 26 Part 3 p.190-193.

http://www.thepsychologist.org.uk/archive/archive_home.cfm?volumeID=26&editionID=223&ArticleID=2237

Grapheme-colour synaesthetes show enhanced visual recognition memory for a variety of things

I wonder where they got the idea for these studies:

Jamie Ward, Peter Hovard, Alicia Jones, and Nicolas Rothen Enhanced recognition memory in grapheme-color synaesthesia for different categories of visual stimuli. Frontiers in Psychology. 2013 Oct 24;4:762. doi: 10.3389/fpsyg.2013.00762. eCollection 2013.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3807560/

http://www.frontiersin.org/journal/10.3389/fpsyg.2013.00762/abstract

I guess it’s nice to see ideas that I have been exploring for years at this blog supported by research. Did you notice that this paper has the same publisher and the same month of publication as that paper, and one of the authors of this paper was an editor of that paper? I think I recognize a pattern.