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PSYC 309
Todd Handy

Reich ‘Sensory Substitution’ article -brain flexible and task-based, not sensory-based (parts of brain may be independent of modality), can change type of sensory input used with training -invasive therapy: bionic eyes, gene therapy, photoreceptor transplant  low res sight and expensive; can use SSDs and prosthesis together -SSDs have better functional performance, rehab CNS and bypass non-functioning peripheral parts -SSDs take visual info  auditory or tactile -SSDs don’t give visual phenomena (USUALLY), but do help make mental rep of shape, surface properties, and location of surroundings -traditional view of brain: brain is divided into visual, auditory, etc cortex and only get info from once sense. Blind ppl’s visual cortex processes other sense: good bc compensates but might make it hard to restore sight bc brain not practiced in analyzing visual info -new evidence: visual cortex isn’t purely visual, brain is task-based and independent of sensory modality; ex listening to echoes activates visual cortex in ppl who know echolocation -braille: ‘primitive’ vision substitution: when reading it visual are that processes written language ‘visual word form area’ is active ex an area that processes shape: visually see shape it’s active or auditory stimuli convey shape it’s active, but not when you just hear normal sounds -visual cortex: ventral processing stream = what (split into anima
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