PSYC 327 Lecture Notes - Lecture 3: Two-Streams Hypothesis, Retina, Nociceptor
Document Summary
Proximal stimulus (vision) > pattern of light on the back of your retina. Distal stimulus (auditory) > air pressure waves/ disturbance in the air/ molecules of some- thing. Nociceptor > specialized high threshold sensory receptors prime causes of acute pain. Basal ganglia is doing the automatic tasks (habitually) Pituitary gland not part of the limbic system but is greatly involved. Amygdala - reads cues of environment and decides if its related to positive or negative events and gives a gut feeling (emotionally charged situations) * say you were hungry, then you hurt yourself - you"re no longer thinking about being hungry, your hypothalamus changes your primary motivation to healing your injury. Provides more surface area, takes up more space - so you can fit into a smaller con- tainer i. e. the human skull. The more neocortex evolved - the more wrinkles. Density of neurons on your face/ tongue is much higher than anywhere else on your body.
