PSYC 302 Lecture Notes - Lecture 2: Hypothalamus, Brainstem, Postcentral Gyrus
Document Summary
Chapter 2 notes: cells and structure anatomy of nervous system. Cells of the nervous system: neurons: basic units of the nervous system; nerve cells arranged in neural circuits and do complex behaviors. Santiago ramon y cajal; 1852-1934: discovered that information transferred through neurons crosses tiny gaps; neurons are separate from each other and are independent structurally, metabolically, and functionally, synapses: information is transmitted from neuron to neuron (neuron doctrine) Input zone: receives info from other neurons: not including yellow circle, dendrites: receive information from other neurons; branched. Interneurons: receive input and send output to other neurons; they are a relay station and communicate with others. neither motorneurons or sensory neurons (third pic) 1: have single extension, (start at cell body) usually thought of as an axon that branches in two directions after leaving cell body. (one end input & other end output, transmit touch information from body to spinal cord.
