Physiology 1021 Chapter Notes - Chapter 7: Tectorial Membrane, Middle Ear, Saccade

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: Tom Stavraky

Document Summary

Introduction changes to the sensory system somatosensory (touch) visual auditory vestibular olfactory (smell) gustatory (taste) Environmental stimuli stimulus must be detected by a sensory receptor environmental stimuli come in different forms and require different receptors to detect the stimulus and then convert it to action potentials. Receptor (generator) potentials sensory receptor is stimulated by an environmental stimulus cause a change in ion permeability leading to a local depolarization: generator orreceptor potential. Receptor potential and neural coding neural coding informed the brain of the weight of an object in your hand. Somatosensory pathways from the periphery to the brain: dorsal column, medial. Primary somatosensory cortex once the sensory information has reached the brain, it travels to the primary somatosensory cortex located in the parietal lobe on the post central gyrus behind the central sulcus. Cones: function best under bright light, ideal for detecting detail three different types of cone cells, each with a different photopigment, each sensitive to one primary color.