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Most likely, a single unifying transduction process by which all sensory neurons function does not exist. It is believed, however, that sensory neurons employ fast, mechanically gated cation channels, and that the depolarization that results across the membrane is followed by the generation of a sodium-dependent action potential at the ...
These neurons contain receptors, called olfactory receptors, that are activated by odor molecules in the air. The molecules in the air are detected by enlarged cilia and microvilli. [5] These sensory neurons produce action potentials. Their axons form the olfactory nerve, and they synapse directly onto neurons in the cerebral cortex (olfactory ...
Sensory transducer cells Auditory outer hair cells of organ of Corti: Basal cells of olfactory epithelium: Cold-sensitive primary sensory neurons: Heat-sensitive primary sensory neurons: Merkel cells of epidermis Olfactory receptor neurons: Pain-sensitive primary sensory neurons: Photoreceptor rod cells: Photoreceptor cells of retina in eye
Sensory neuroscience is a subfield of neuroscience which explores the anatomy and physiology of neurons that are part of sensory systems such as vision, hearing, and olfaction. Neurons in sensory regions of the brain respond to stimuli by firing one or more nerve impulses ( action potentials ) following stimulus presentation.
Mechanosensitive channels respond to membrane tension by altering their conformation between an open state and a closed state. [48] [49] One type of mechanically sensitive ion channel activates specialized sensory cells, such as cochlear hair cells and some touch sensory neurons, in response to forces applied to proteins. [50] [51]
The sensory nervous system is a part of the nervous system responsible for processing sensory information. A sensory system consists of sensory neurons (including the sensory receptor cells), neural pathways , and parts of the brain involved in sensory perception and interoception .
Inside each sensillum there are two to four sensory neurons. These neurons, or receptors, gather information about environment the arthropod is in: [1] Chemoreceptors (i.e. trichoid, basionic, coeloconic, placodea) Mechanoreceptors (e.g.: bristle sensilla, campaniform sensilla, hair plates, chordotonal neurons) Thermoreceptors; Hygroreceptors
Many of the areas Brodmann defined based solely on their neuronal organization have since been correlated closely to diverse cortical functions. For example, Brodmann areas 1, 2 and 3 are the primary somatosensory cortex ; area 4 is the primary motor cortex ; area 17 is the primary visual cortex ; and areas 41 and 42 correspond closely to ...
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