PSYC 1000 Lecture Notes - Lecture 14: Visual Cortex, Stem-Cell Therapy, Corpus Callosum

• School: Memorial University
• Department: Psychology
• Course: PSYC 1000
• Professor: Elizabeth Russell

Document Summary

The (cid:271)rai(cid:374)"s a(cid:271)ilit(cid:455) to (cid:373)odif(cid:455) itself after da(cid:373)age. Severed neurons in the cns do not regenerate. But, neurons can re-organize (called neuroplasticity: the brain restructures the remaining neurons. Examples: bli(cid:374)d perso(cid:374)"s visual asso(cid:272)iatio(cid:374) (cid:272)orte(cid:454) (cid:373)a(cid:455) (cid:271)egi(cid:374) to pro(cid:272)ess ta(cid:272)tile i(cid:374)for(cid:373)atio(cid:374) from finger used for braille, a deaf perso(cid:374)"s auditor(cid:455) asso(cid:272)iatio(cid:374) (cid:272)orte(cid:454) (cid:373)a(cid:455) (cid:271)egi(cid:374) to re(cid:272)eive i(cid:374)puts fro(cid:373) visual cortex (enhancing vision) The brain can start to take on other tasks and enhance senses depending on what healthy neurons are left from the damage. Neurogenesis (brain fights back after injury: some brain regions produce new neurons (e. g. hippocampus) Was once thought that we are born with a certain number of neurons and cannot produce new ones (until about 15 years ago: exercise, sleep, stress reduction increase neurogenesis. Stem cell therapy: undifferentiated cells (which are not committed yet) (from one region) that could be used to make neurons.