Synesthesia And Synesthesia And The Temporal Lobe The Temporal Lobe

Of The Cerebral Of The Cerebral CortexCortex

Caroline HsiaoCaroline Hsiao

NeedNeed

Less than 1% of the total population Less than 1% of the total population experience the daily neurological experience the daily neurological experience of Synesthesia.experience of Synesthesia.

Less than 10% of the total Less than 10% of the total population know about synesthesia.population know about synesthesia.

Synesthesia may tell us about Synesthesia may tell us about consciousness, the nature of reality, consciousness, the nature of reality, and the relationship between reason and the relationship between reason and emotion.and emotion.

Knowledge BaseKnowledge Base

The temporal lobe controls vision

http://research.yale.edu/ysm/article.jsp?articleID=83

Knowledge BaseKnowledge Base

Graphemes sensory area

Color sensory area

http://www.nature.com/neuro/journal/v10/n6/fig_tab/nn0607-671_F1.html

Temporal Lobe

Knowledge BaseKnowledge Base

http://www.dwp.gov.uk/medical/med_conditions/major/stroke/specific_nps_stroke.asp

http://benkimball.vox.com/library/post/qotd-time-travel.html

Temporal Lobe

Knowledge BaseKnowledge Base

Someone with Grapheme → color synesthesia may see similar to this.

http://bnee.com/2006/09/synesthesia-my-synesthetic-alphabet/

Literature ReviewLiterature Review J. A. Nunn, L. J. Gregory M. Brammer, S. C. R. J. A. Nunn, L. J. Gregory M. Brammer, S. C. R.

Williams, D. M. Parslow, M. J. Morgan, R. G. Williams, D. M. Parslow, M. J. Morgan, R. G. Morris, E. T. Bullmore, S. Baron-Cohen and J. A.Morris, E. T. Bullmore, S. Baron-Cohen and J. A.

Used functional magnetic resonance imaging Used functional magnetic resonance imaging (fMRI), to locate the region activated by speech in (fMRI), to locate the region activated by speech in synesthetes to area V4/V8 in the left hemisphere, synesthetes to area V4/V8 in the left hemisphere, and demonstrate overlap with V4/V8 activation in and demonstrate overlap with V4/V8 activation in normal controls in response to color. normal controls in response to color.

No activity was detected in areas V1 or V2, No activity was detected in areas V1 or V2, suggesting that activity in primary visual cortex is suggesting that activity in primary visual cortex is not necessary for such experience. not necessary for such experience.

Literature ReviewLiterature Review Palmeri Thomas J., Blake Randolph, Marois RenePalmeri Thomas J., Blake Randolph, Marois Rene

´, Flanery Marci A., and Whetsell William, Jr. ´, Flanery Marci A., and Whetsell William, Jr.

subject, in contrast to non-synesthetic subjects, subject, in contrast to non-synesthetic subjects, accomplished task with relative ease accomplished task with relative ease

the target of the search had a different the target of the search had a different synesthetic color from distracters. synesthetic color from distracters.

synesthetic experiences appear to originate from synesthetic experiences appear to originate from a binding of color and form that takes place a binding of color and form that takes place within central stages of visual processing.within central stages of visual processing.

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