Material below summarizes the article Dopamine Modulates the Activity of Sensory Hair Cells, published on December 16, 2015, in JNeurosci and authored by Cecilia Toro, Josef G. Trapani, Itallia Pacentine, Reo Maeda, Lavinia Sheets, Weike Mo, and Teresa Nicolson.
Perception of sensory stimuli, like sounds waves, is typically thought of as a unidirectional process: Sound waves hits the eardrum, and are then sensed by the inner ear, which conveys those auditory signals to the brain. At various centers of the brain, these signals are processed and relevant information is sorted. This allows for focused perception, such as hearing a particular voice among many voices.
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