The adequate stimulus is a property of a sensory receptor that determines the type of energy[citation needed] to which a sensory receptor responds with the initiation of sensory transduction. Sensory receptor are specialized to respond to certain types of stimuli. The adequate stimulus is the amount and type of energy required to stimulate a specific sensory organ.[1]
Many of the sensory stimuli are categorized by the mechanics by which they are able to function and their purpose. Sensory receptors that are present within the body typically are made to respond to a single stimulus. Sensory receptors are present all throughout the body, and they take a certain amount of a stimulus to trigger these receptors. The use of these sensory receptors allows the brain to interpret the signals to the body which allow a person to respond to the stimulus if the stimulus reaches a minimum threshold to signal the brain. The sensory receptors will activate the sensory transduction system which will in turn send an electrical or chemical stimulus to a cell, and the cell will then respond with electrical signals to the brain which were produced from action potentials.[1] The minuscule signals, which result from the stimuli, enter the cells must be amplified and turned into an sufficient signal that will be sent to the brain.[2]
A sensory receptor's adequate stimulus is determined by the signal transduction mechanisms and ion channels incorporated in the sensory receptor's plasma membrane. Adequate stimulus are often used in relation with sensory thresholds and absolute thresholds to describe the smallest amount of a stimulus needed to activate a feeling within the sensory organ.
^ abFrings, Stephan (2012-01-01). "Sensory cells and sensory organs". In Barth, Friedrich G.; Giampieri-Deutsch, Patrizia; Klein, Hans-Dieter (eds.). Sensory Perception. Springer Vienna. pp. 5–21. doi:10.1007/978-3-211-99751-2_1. ISBN 9783211997505.
^Frings, Stephan (2012-01-01). "Sensory cells and sensory organs". In Barth, Friedrich G.; Giampieri-Deutsch, Patrizia; Klein, Hans-Dieter (eds.). Sensory Perception. Springer Vienna. pp. 5–21. doi:10.1007/978-3-211-99751-2_1. ISBN 9783211997505.
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