PSB 3340 Study Guide - Midterm Guide: Delta Wave, Narcolepsy, Zeitgeber
24 Aug 2016
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Document Summary
Energy from the environment is translated into a signal that the brain can detect. Transduction begins with the mechanical deformation of the receptor. Sensory transduction is the process by which energy is converted into a change in membrane potential. Adaptation = the progressive loss of sensitivity of a sensory receptor as a consequence of sustained stimulation. Thalamus receives projections from all sensory systems. Know the different types receptor cells in the somatosensory system (ex: meissner"s corpuscles) Receptors: chemoreceptors have action potentials, have action potentials, humans have only 350 receptors types but can distinguish 10,000 scents, the pattern of binding to olfactory receptors indicates the odorant. Memories are readily evoked by the sense of smell b/c the connection between the sense of smell and the amygdala. The swaying of stereocilia in response to sound waves results in an influx of k+ and ca2+ at the tip of the hair cell. Can detect sound waves between 20-20,000 hz.
