Tag Archives: Current Biology

More interesting stuff about “the dress”

I’m a little bit relieved to find that as a person who saw the colours exactly as they are in the photo, I’m not the only person who percieved the colours of “the dress” in such a straighforward and rational way. I’m a member of the third-most common group of people, a minority (?!?) of around 10% of people. The smallest minority of respondents are classified as “other”. We can only guess what these people saw, and what they were on.

“I think it will go down as one of the most important discoveries in color vision in the last 10 years,” Conway says. “And all because of a crazy photograph.” I think it just goes to prove that there’s more new scientific discoveries out there to be made than we can guess, and those discoveries can originate from people who are not scientists and human activities that are far removed from academia and science labs. I love it.

The Dress divided the Internet, but it’s really about subtraction. RACHEL EHRENBERG

ScienceNews. MAY 14, 2015.

Striking individual differences in color perception uncovered by ‘the dress’ photograph. Rosa Lafer-Sousa, Katherine L. Hermann, Bevil R. Conway

Current Biology. Available online 14 May 2015.

The many colours of ‘the dress’. Karl R. Gegenfurtner , Marina Bloj, Matteo Toscani

Current Biology. Available online 14 May 2015.

Asymmetries in blue–yellow color perception and in the color of ‘the dress’. Alissa D. Winkler, Lothar Spillmann, John S. Werner, Michael A. Webster

Current Biology. Available online 14 May 2015.

What colour is the dress? Here’s why we disagree. Michael Slezak

New Scientist. 27 February 2015.

Grapheme-colour synaesthesia and enhanced cortical excitability – I find this research quite exciting, but maybe that’s just me

“He found that neurons in the primary visual cortex were more active than expected.”

This is a quote about a study of some grapheme-colour synaesthetes. I’m a grapheme-colour synaesthete, and I’m wondering if this enhanced cortical excitability in the primary visual cortex which they wrote about in New Scientist last November is also an explanation for my superior face memory and the many other atypical visual perception experiences that I’ve had, and have described in this blog. It’s exciting research.

Hyperactive neurons build brains in synaesthesia. New Scientist. 23 November 2011 Issue 2840 p. 18.  http://www.newscientist.com/article/mg21228405.400-hyperactive-neurons-build-brains-in-synaesthesia.html

Thomson, Helen Hyperactive neurons build brains in synaesthesia. New Scientist. 17 November 2011  http://www.newscientist.com/article/dn21183-hyperactive-neurons-build-brains-in-synaesthesia.html

Enhanced Cortical Excitability in Grapheme-Color Synesthesia and Its Modulation. Current Biology. Vol 21 Issue 23 2006-2009, 17 November 2011. 10.1016/j.cub.2011.10.032 http://www.cell.com/current-biology/retrieve/pii/S0960982211011936

Amusia or tone-deafness can be tested for and diagnosed in childhood

Amusia can be diagnosed using a battery of tests, the Montreal Battery for the Evaluation of Amusia (MBEA; Peretz, 2003). The first documented case of congenital amusia in childhood is described in the paper listed below. Amusia is one of a number of disorders of perception that I have written about in this blog, including prosopagnosia and agnosia for scenes, that have been theorized as being caused by a lack of connections in the brain, which could be seen as the opposite of synaesthesia. I guess that amusia, a difficulty in perceiving music, could be seen as the opposite of perfect pitch, which is an ability that appears to be associated with synaesthesia and autism.

References

Marie-Andrée Lebrun, Patricia Moreau, Andréane McNally-Gagnon, Geneviève Mignault Goulet & Isabelle Peretz Congenital amusia in childhood: A case study. Cortex. (article in press) doi:10.1016/j.cortex.2011.02.018   http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B8JH1-529MVTS-1&_user=10&_coverDate=03/04/2011&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_searchStrId=1726989201&_rerunOrigin=scholar.google&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=43fef257d6f2b1bfce00e36d3badb560&searchtype=a

Lauren Stewart Congenital amusia (quick guide) Current Biology. Volume 16 Issue 21 7 November 2006. Pages R904-R906.    doi:10.1016/j.cub.2006.09.054  http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VRT-4M8WTCF-7&_user=10&_coverDate=11%2F07%2F2006&_rdoc=20&_fmt=high&_orig=browse&_origin=browse&_zone=rslt_list_item&_srch=doc-info(%23toc%236243%232006%23999839978%23636547%23FLA%23display%23Volume)&_cdi=6243&_sort=d&_docanchor=&view=c&_ct=32&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=7d8218bc925dd41d5cb5c44a89ac76b4&searchtype=a

Delosis Research Technology Musical Listening Test http://www.delosis.com/listening/home.html

I can’t believe it’s not synaesthesia! – embodied cognition

Yes indeed, this is a fascinating article from New Scientist magazine. This is the article that made me feel incredulous the first time that I read it last year, that the word “synaesthesia” was not even once mentioned in it, because it seemed to be an article about a number of different types of synaesthesia. I could go into details about why I believe this, but I’d risk restating most of the text of this two-page article. Basically, this is an article about embodied cognition. It is clear to me that the researchers studying embodied cognition have a lot to gain from sharing ideas with synaesthesia researchers (and synaesthetes), and vice versa.

A study by Australian academic Tobias Loetscher that was published in the journal Current Biology and another study by Daniel Casasanto, an academic in the Netherlands, which was published in the journal Cognition are discussed in this article. The “metaphor theory” of George Lakoff and Mark Johnson is discussed. Much of this article seems to be very relevant to the idea proposed by some synaesthesia researchers that synaesthesia is the origin of metaphorical language. Wouldn’t synaesthesia or some very similar mental process be the link between study subjects’ emotional feelings of being socially isolated and their reported physical sensations of feeling physically colder?

Other parts of this article seem to be very relevant to, or a description of, number form synaesthesia and other mental mappings of concepts onto “spatial schema”. The study by Casasanto is about a psychological process that is very similar to the forward and backward vection that was the subject of the study in PLoS ONE that I discussed in a previous blog posting, in that it shows an influence on abstract thought from performing a physical task that focused the mind on one or other spatial directions. The vection study that I previously discussed was about backward and forward motion influencing abstract thought. The Casasanto study was about moving something upwards and moving something downwards influencing abstract thought.

Many of the more general conclusions in this article, based on the study findings, also seemed to be very relevant to my experiences of fine motor performances determining the content of my thoughts, often involving links with conceptual thinking, by a process that I believe is synaesthesia. “The results also led to a deeper question: does physical movement have the power to change not just the speed at which people talk, but also what they choose to talk – or even think – about?” A study by Casasanto found this to be true. “Isn’t that somewhat scary?” Casasanto asked. Yes, I think it is scary, but it is only by being aware of the irrational and arbitrary things that can influence cognition that we can ever hope to detect, control and transcend such influences.

Ananthaswamy, Anil Let your body do the thinking. New Scientist. Number 2753 March 27th 2010 p.8-9.
http://www.newscientist.com/article/mg20527535.100-mind-over-matter-how-your-body-does-your-thinking.html

Two articles about embodied cognition from Miller-McCune:

Jacobs, Tom To feel good, reach for the sky. Miller-McCune. February 4th 2010. http://www.miller-mccune.com/health/to-feel-good-reach-for-the-sky-8445/

Hilo, Jessica Power poses really work. Miller-McCune. November 15th 2010. http://www.miller-mccune.com/culture-society/power-poses-really-work-25322/