Sensory Discrimination
Sensory Discrimination - Related Videos
13:11
Sensory Exam
0 Views •
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...
02:55
Stereotypes, Prejudice, and Discrimination
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2020
Humans are very diverse and although we share many similarities, we also have many differences. The social groups we belong to help form our identities (Tajfel, 1974). These differences may be difficult for some people to reconcile, which may lead to prejudice toward people who are different. Prejudice is a negative attitude and feeling toward an individual based solely on one’s membership in a particular social group (Allport, 1954; Brown, 2010). Prejudice is common against people who are...
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...
06:41
Testing for Odor Discrimination and Habituation in Mice
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Cited by 66 •
2015
This manuscript describes a protocol to examine the olfactory system of rodents. The olfactory habituation/dishabituation test will allow investigators to determine whether a mouse habituates to a repeatedly presented odor and whether the mouse demonstrates dishabituation when presented a novel odor.
01:25
Price Discrimination under Monopoly
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2024
Price discrimination under monopoly refers to the practice where a monopolist charges different prices for the same product or service to different customers or in different markets. This strategy allows the monopolist to capture more consumer surplus, turning it into additional profits. For price discrimination to be effective, three conditions must be met: 1) the firm must have market power, 2) the firm must have the ability to separate markets or customers, and 3) the firm faces different...
FAQs
These features provide different dimensions for comparing sensory input. Receptors encode physical or chemical energy into neural signals, while spinal and brain circuits evaluate patterns of activity associated with stimulus strength, position, timing, or quality. Examining these dimensions separately helps researchers determine which stimulus differences an organism can detect and how neural processing supports that distinction.
A single neural signal may be ambiguous without a broader activity pattern for comparison. Circuits in the spinal cord and brain compare activity across sensory pathways, helping separate relevant differences from background input. This comparative processing allows investigations to connect changes in pathway activity with differences in what an organism detects or interprets.
Sensory discrimination provides a way to distinguish features within touch, pain, hearing, and vision before or during their combination with other inputs. Studying these distinctions helps researchers examine how the nervous system compares information from multiple sensory pathways. The same framework can therefore address both individual modalities and the integration of their signals.
Psychophysical thresholds indicate the smallest or otherwise measurable difference in a stimulus that an organism can distinguish during a behavioral task. Researchers can compare thresholds across stimulus features or sensory modalities, then relate those behavioral results to neural recordings. This approach links observable performance with the activity of sensory circuits.
A typical study combines a behavioral task with controlled sensory stimuli, measurement of psychophysical performance, and, when appropriate, neural recordings. Researchers first assess how accurately an organism distinguishes relevant differences, then examine activity in sensory pathways or circuits. Comparing these measurements helps connect perceptual outcomes with underlying circuit function.
Neural recordings provide measurements of activity in sensory pathways while discrimination is assessed behaviorally. Researchers can compare recorded patterns with performance on tasks involving intensity, location, timing, or quality. This comparison helps identify relationships between circuit activity and perceptual distinctions without relying on behavioral results alone.
Measuring discrimination can reveal how well an organism separates meaningful sensory differences from background input. In sensory-disorder research, behavioral thresholds and neural recordings provide complementary measures of altered perception or circuit function. The same measurements also support studies of adaptive behavior by showing how sensory processing relates to an organism’s responses to its surroundings.