PSYC 2000 Lecture Notes - Lecture 4: Reflex Arc, Visual Cortex, Aphasia
Document Summary
Composed of a complex network of cells throughout the body. Neurons: type of cell that transmits information. Central nervous system: brain: interprets and stores info and sends orders to muscles, glands, and organs. Dorsal: anything directed toward the top half of the brain; superior. Ventral: or inferior; is the bottom half of the brain; all veins and arteries that feed into the brain are in this area. Medial: toward the center of the brain. Lateral: toward the edges of the brain. The two sections of the cortex on the left and right sides of the brain. Thick band of neurons that connects the right and left cerebral hemispheres. Frontal: higher order cognition (thinking, planning, decision making) Somatosensory cortex: touch, tactile: spinal chord: pathway connecting the brain and the peripheral nervous system. Reflex arc neurons (this is why reflex is so fast: afferent/sensory: from senses to spinal chord, interneurons: connect afferent to efferent, efferent/motor: from spinal chord to muscles.
