PSYC1020 Lecture Notes - Lecture 9: Subventricular Zone, Donald O. Hebb, Behavioral Enrichment
Document Summary
Increased neurogenesis results in less risk of depression and the increased effectiveness of drugs treating depression. Environmental enrichment: rats raised in enriched conditions (cage full of wheels, slides and friends) have increased dendrite growth and extensive synaptic connections. In humans, impoverished conditions are bad to brain development: hu(cid:373)a(cid:374)s do (cid:374)ot show that (cid:858)e(cid:374)ri(cid:272)hed(cid:859) (cid:272)o(cid:374)ditio(cid:374)s are (cid:271)etter tha(cid:374) (cid:374)or(cid:373)al (cid:271)e(cid:272)ause our (cid:374)or(cid:373)al conditions are already enriched in terms of social interactions etc. Homunculus: the brain map that shows that the area of the cortex is larger for fine motor control (moving hands, the size of brain areas increases with the more use of that area. Limbic system: the system of the brain dealing with emotions and memory, a major component of the limbic system is the hippocampus. What did h. m. studies reveal: memory is composed of different components mediated by different parts of the brain, removing one part of the brain (hippocampus) did not erase all his memory.
