Mr. Phettuccine is a 65 year old man who has been blind from birth and relies...

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Medical Sciences

Mr. Phettuccine is a 65 year old man who has been blind frombirth and relies heavily on reading via Braille (touch-readingusing raised dots). He has recently been diagnosed with aneurodegenerative disease and is worried it will affect his abilityto read using Braille.
Using your knowledge of touch sensory physiology (M1L6), pleaseanswer the following questions with one or two (1-2) sentences eachin the text box below.
Part A. Describe how lateral inhibition allows for localizationof a touch stimulus. (1.5 marks)
Part B. If the neurodegeneration has reduced his touch lateralinhibition, what do predict would happen to his Braille reading? (1mark)
Part C. What type of touch receptors do you predict would mostbe affected? Explain your reasoning. (1 mark 1).

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Lateral inhibition in tactile discrimination Lateral inhibition is a phenomenon by which stronger inputs are enhanced and the weaker inputs of adjacent sensory units are simultaneously inhibited Stimulus localization can be made more precise by lateral inhibition as explained When See Answer

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