Sensory Conduction
Sensory Conduction - Related Videos
13:11
Sensory Exam
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2023
Source:Tracey A. Milligan, MD; Tamara B. Kaplan, MD; Neurology, Brigham and Women's/Massachusetts General Hospital, Boston, Massachusetts, USA A complete sensory examination consists of testing primary sensory modalities as well as cortical sensory function. Primary sensory modalities include pain, temperature, light touch, vibration, and joint position sense. Sensation of the face is discussed in the videos Cranial Nerves Exam I and II, as are the special senses of smell, vision, taste, and...
01:31
What is a Sensory System?
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2019
Sensory systems detect stimuli—such as light and sound waves—and transduce them into neural signals that can be interpreted by the nervous system. In addition to external stimuli detected by the senses, some sensory systems detect internal stimuli—such as the proprioceptors in muscles and tendons that send feedback about limb position. Sensory systems include the visual, auditory, gustatory (taste), olfactory (smell), somatosensory (touch, pain, temperature, and proprioception), and vestibular...
12:55
P50 Sensory Gating in Infants
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Cited by 5 •
2013
Methods to record auditory P50 sensory gating, a physiological marker of cerebral inhibition which reflects early stages of attention, are described.
04:01
Isolation of Cells from Sensory Ganglia
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2025
This video demonstrates the isolation of cells from the sensory ganglia of mice. Ganglia are subjected to enzymatic digestion to dissolve the extracellular matrix. Single cells are then collected via filtering through a cell strainer followed by density gradient centrifugation for debris removal. Finally, washing and centrifugation are done to collect the isolated cells for future analysis.
09:09
Conducting Reactions Below Room Temperature
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2023
Source: Laboratory of Dr. Dana Lashley - College of William and Mary Demonstration by: Matt Smith When new bonds are formed in the course of a chemical reaction, it requires that the involved species (atoms or molecules) come in very close proximity and collide into one another. The collisions between these species are more frequent and effective the higher the speed at which these molecules are moving. A widely used rule of thumb, which has its roots in the Arrhenius equation1, states that...
FAQs
A receptor potential is graded, meaning its magnitude varies with the effect of the stimulus on the receptor membrane. When this activity reaches a level capable of triggering action potentials, the afferent neuron carries the signal onward. This conversion links local membrane changes at the receptor with the longer-distance neural transmission required for central processing.
The nervous system derives different stimulus features from the pattern of neural activity reaching the central nervous system. Changes in receptor membrane activity contribute to intensity-related information, while the pathway carrying the signal supports localization. The timing of activity adds temporal information, allowing central processing to distinguish when a stimulus occurs and how its signal evolves.
Peripheral nerves provide routes for afferent action potentials to travel from receptors toward the spinal cord and brain. Synaptic relays then pass activity between neural stages before central processing produces perceptual signals. Examining both components helps distinguish where sensory information is transmitted, relayed, and ultimately interpreted within the nervous system.
A useful sequence follows the signal from the initial stimulus to receptor membrane activity, then to action-potential generation in an afferent neuron, transmission through a peripheral nerve, and passage across synaptic relays. The pathway can then be considered at the spinal cord and brain levels, where the incoming activity supports perceptual processing.
Sensory conduction provides a framework for investigating how pain and touch signals move through neural pathways and become perceptual information. It is also relevant when researchers examine sensory disorders or neural injury, because altered transmission can affect the information reaching central nervous system structures. These contexts connect pathway analysis with strategies for restoring sensory function.
Studying this process can clarify how the nervous system represents a stimulus's intensity, location, and timing rather than merely whether a stimulus occurred. It can also help relate changes in receptors, afferent neurons, peripheral nerves, or synaptic relays to sensory impairment. Such insights support research on pain, touch, injury, disorders, and therapeutic restoration of sensory function.