Psychology 2220A/B Lecture Notes - Lecture 16: Motor System, Thalamus, Retina

• School: Western University
• Department: Psychology
• Course: Psychology 2220A/B
• Professor: Jody Culham

Document Summary

General principle #3: sensory information passes through the thalamus (except smell) to the primary cortex and then to the non-primary cortex, receptors transduce information to neural code. Pathways: vision: we have photoreceptors in the eye, bipolar cells and ganglion cells in the retina, which then go to the retina via the optic nerve, chiasm, tract, to the thalamus. Pathways: touch: everything coming from one side of the body ends up on opposite side of the brain, first stop is thalamus, then primary somatosensory cortex. Pathways: hearing: cochlea thalamus pac, more input from right ear to left hemisphere and vice versa. Pathways: smell: exception: receptors primary cortex thalamus secondary cortex, receptors limbic system. Summary: vestibulocerebellum, area of the cerebellum that gets info from the balance systems. General principle #4: the spatial senses contain maps, which may be distorted. Dermatomes: touch: dermatomes are an example of body maps. If you stimulate a dermatome, you will activate one of the routes.