Sensory Gating
Sensory Gating - Related Videos
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.
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...
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...
11:35
Flash Photolysis of Caged Compounds in the Cilia of Olfactory Sensory Neurons
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Cited by 8 •
2011
Photolysis of caged compounds allows the production of rapid and localized increases in the concentration of various physiologically active compounds. Here, we show how to obtain patch-clamp recordings combined with photolysis of caged cAMP or caged Ca for the study of olfactory transduction in dissociated mouse olfactory sensory neurons.
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.
FAQs
Inhibitory neural circuits regulate how strongly sensory signals continue through the nervous system. By reducing transmission of inputs that do not require further processing, these circuits limit competing activity and help preserve processing capacity for information relevant to behavior. This mechanism provides the physiological basis for examining sensory filtering in neuroscience.
Thalamic filtering and cortical responses represent complementary points of regulation. Thalamic mechanisms influence which sensory inputs are transmitted onward, while cortical responses reveal how the brain reacts to repeated or distracting information after transmission. Considering both levels helps researchers relate early signal control to the neural processes supporting perception and attention.
Repeated and distracting stimuli provide controlled situations for examining whether neural responses are reduced or regulated. A diminished response to repetition can indicate suppression of redundant input, whereas responses to distraction show how competing information is handled. These comparisons help clarify how the nervous system prioritizes signals without allowing irrelevant stimulation to dominate attention.
Prepulse inhibition and auditory P50 suppression are laboratory measures that provide observable readouts of sensory-gating processes. They allow researchers to examine inhibitory regulation through different experimental responses rather than relying only on subjective reports of perception. Together, these measures support neuroscience studies of how effectively the nervous system controls incoming sensory information.
Sensory gating contributes to attention by helping the brain prioritize information that is relevant to current behavior. Filtering competing or repetitive input reduces the likelihood that distracting signals will interfere with processing. Studying this relationship connects neural inhibition with perception, attention, and the coordinated selection of information needed for behavioral responses.
Altered sensory gating has been associated with schizophrenia, attention disorders, and sensory-processing abnormalities. Researchers therefore use gating measures to investigate how neural dysfunction may affect the selection and suppression of sensory information. Because these measures may serve as potential biomarkers, they can also contribute to research evaluating patterns of dysfunction across neurological or psychiatric conditions.