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).
