PSYC 406 Lecture Notes - Lecture 3: Axon, Retina, Limulus
Document Summary
Area on retina that causes neuron to fire. Stimulus is presenting to retina and response of cell is measured by an electrode. Signals from retina travel through optic nerve to. Primary visual receiving area in occipital lobe. Then through two pathways to temporal and parietal lobe. Function is to regulate neural information from retina to vc. Signals received from retina, cortex, brain stem, thalamus. Organized by eye, receptor type, and environment. Fires maximally when light is perfectly perpendicular. Certain cells respond to certain angles and movement. Neurons tuned to specific stimuli fatigue when exposure is too long. Fire less when stimulus is presented again. Animals reared in environments that contain only certain types of stimuli. Neurons that respond to these will become more predominant due to neural plasticity. Representation of perceived objects through neural firing. Specificity coding: specific neurons responding to specific stimuli. Ommatidia allow recordings from a single receptor.
