PSYC 1101 Study Guide - Midterm Guide: Synesthesia, Dendrite, Sound

• School: Northeastern University
• Department: Psychology
• Course: PSYC 1101
• Professor: Wormwood

Document Summary

Neuron doctrine: this theory proposed that the nervous system is composed of individual, discrete cells. Transduction: the conversion of one form of energy into another. Myelin: this substance insulates the axon of a neuron. Sodium: this ion is found in higher concentrations outside a cell membrane, triggers action potential. Diffusion: the tendency for molecules in high concentration to move to low concentration. Temporal coding: when the cochlea registers low frequencies via the firing rate of action potentials entering the auditory nerve. Frequency: aspect of sound wave perceived as pitch. Endorphins: natural pain killers, also capable of producing euphoria. Cochlea: coiled part of the inner ear where sound is converted from mechanical to nerve impulses. Synesthesia: results in the experience of one sense evoking the perceptual experience of another. Agonist: substance mimics or enhances the effects of a neurotransmitter. Occipital lobe: home to primary visual areas. Mri: uses electromagnetic field to provide structural images of tissues.