Sensory Neuron

Sensory Neuron

Sensory neurons are typically classified as the neurons responsible for converting various external stimuli that comes from the environment into corresponding internal stimuli. They are activated by sensory input (vision, touch, hearing, etc.), and send projections into the central nervous system that convey sensory information to the brain or spinal cord. Unlike neurons of the central nervous system, whose inputs come from other neurons, sensory neurons are activated by physical modalities such as light, sound, and temperature.

In complex organisms, the central nervous system is the destination in which sensory neurons transmit their data to; in the case of less complex organisms, such as the hydra, sensory neurons send their data to motor neurons and sensory neurons can also send data via (electrical impulses) to the brain.

At the molecular level, sensory receptors located on the cell membrane of sensory neurons are responsible for the conversion of stimuli into electrical impulses. The type of receptor employed by a given sensory neuron determines the type of stimulus it will be sensitive to. For example, neurons containing mechanoreceptors are sensitive to tactile stimuli, while olfactory receptors make a cell sensitive to odors.

Read more about Sensory Neuron:  Drugs, Plasticity (Neuroplasticity), Fiber Types

Other articles related to "neuron, sensory neuron, neurons":

Trk A Receptor
... developmental programmed cell death • positive regulation of neuron projection development • response to activity • olfactory nerve ... kinase leads to cell differentiation and may play a role in specifying sensory neuron subtypes ...
Mechanoreceptor - Pacinian Corpuscle
... Each is connected to a sensory neuron ... Deforming the corpuscle creates a generator potential in the sensory neuron arising within it ... triggered at the first node of Ranvier of the sensory neuron ...
John Eccles (neurophysiologist) - Life and Work - Career
... studied because it consists of only two neurons a sensory neuron (the muscle spindle fiber) and the motor neuron ... The sensory neuron synapses onto the motor neuron in the spinal cord ... When Eccles passed a current into the sensory neuron in the quadriceps, the motor neuron innervating the quadriceps produced a small excitatory ...
Sensory Neuron - Fiber Types
... Peripheral nerve fibers can be classified based on axonal conduction velocity, mylenation, fiber size etc ... For example, there are slow-conducting unmyelinated C fibers and faster-conducting myelinated Aδ fibers ...

Famous quotes containing the word sensory:

    Our talk of external things, our very notion of things, is just a conceptual apparatus that helps us to foresee and control the triggerings of our sensory receptors in the light of previous triggering of our sensory receptors.
    Willard Van Orman Quine (b. 1908)