PSYCH 220 Study Guide - Final Guide: Autonomic Nervous System, Primary Motor Cortex, Sympathetic Nervous System
Document Summary
Increased interconnectivity across brain regions causes person to mix senses. For example, can smell sounds, hear colors, etc. Neurons for one sense may be located in a part of the brain for a different sense. Receptor cells: contained in sensory organs and sense some stimuli. Substances in contact with the tongue or other taste buds. Labeled lines: action potentials travel along separate nerve tracts, so the brain is able to differentiate between different senses, touching something hot activates heat receptors. Somatosensory system: determine whether the sensation arises from within or outside the body. Structure of a receptor cell: the region where a sensory stimulus will alter a (cid:374)euro(cid:374)"s firi(cid:374)g rate, determines what kind of energy or chemical it responds to. Generator potential: local change in membrane potential when stimulus binds. Sensory transduction: conversion of electrical energy from a stimulus into a change in membrane potential in a receptor cell. Responds to changes in stimuli: merkel"s dis(cid:272)s.
