PSY 2301 Lecture Notes - Lecture 8: White Matter, Neurology, Olfactory Bulb

• School: University of Ottawa
• Department: Psychology
• Course: PSY 2301
• Professor: Andree- Anne Ledoux

Document Summary

Look at two rats, one in a stimulating environment, one not. The one that grew up in the stimulating environment will have more dendrites, and this means more learning due to experience. Dendritic plasticity: we can inject dyes and see how the dendrites grew 90 days later, there are not too many dendrites initially attached to the soma, after learning events, the dendrites seem to lengthen. Effect of experience on dendrites: after a lot of experience, you see formation of news ynapses from new axon terminals. You grew new dendrites as well: there are a variety of observed shapes of new dendritic spines. Learning effects on hippocampal volume: we have the ability for neurogenesis. That ability is principally in the olfactory bulb and the hippcampus. We have stem cell regions that are capable of creating neurons that we can use. the capacity for memory improvement and correlated structural changes in the hippcampus extends well into adulthood.