SCI227 Lecture Notes - Lecture 19: Taste Bud, Sensory Neuron, Parietal Lobe
Document Summary
Sensory information: supplies the cns with information about the environment. Is vital to your safety (helps you sense your surroundings) Is transmitted through action potentials and where these go determines our perception. Sensory receptors: can be grouped within organs e. g. Eye: are located on the dendrites of sensory neurons, detect sensations (a stimulus, convert the stimulus to action potentials, the sensory information detected by receptors is sent to the correct part of the cerebrum to be interpreted. Sensory adaptation: occurs when the receptor has become accustomed to the stimulus, the neuron stops firing even though the stimulus is present, e. g. you stop feeling the clothes on your skin. If your nasal passages are clogged, your sense of taste is diminished. Mechanical receptors: sense mechanical forces that deform or displace tissues, they are free nerve endings (naked dendrites) and are important because they make you aware of dangerous stimulus, sensing stretching & pressure (inside your body)
