Cortical Sensory Function
Cortical Sensory Function - 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...
12:29
Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
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Cited by 17 •
2011
The effect of weightlessness and hypergravity on both hemodynamic and electrophysiological processes in the brain is going to be followed during parabolic flight by EEG and NIRS techniques. A feasibility study of a more complex experiment, which is planned to carry out during medium- and long-term space flight.
01:16
Sensory Functions of the Skin
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2025
The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses. There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
09:13
Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
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Cited by 14 •
2015
We describe how to implement a battery of behavioral tasks to examine the processing and integration of sensory stimuli in children with ASD. The goal is to characterize individual differences in temporal processing of simple auditory and visual stimuli and relate these to higher order perceptual skills like speech perception.
16:33
Functional Calcium Imaging in Developing Cortical Networks
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Cited by 32 •
2011
Spontaneous activity of developing neuronal networks can be measured using AM-ester forms of calcium-sensitive indicator dyes. Changes in intracellular calcium, indicating neuronal activation, are detected as transient changes in indicator fluorescence with one- or two-photon imaging. This protocol can be adapted for a range of developmentally-dependent neuronal networks in vitro.
FAQs
Cortical processing does more than relay incoming signals: neuronal networks organize sensory inputs and distinguish meaningful patterns. This integration allows the brain to connect a sensation with attention, memory, and behavior rather than treating each signal as an isolated event. Clinically, disruption of this organization can produce abnormal higher-level sensory interpretation.
The location of a sensory problem matters because similar complaints can arise from different levels of the nervous system. Clinical comparison of cortical sensory findings with patterns expected from peripheral nerve or spinal pathway disorders helps localize dysfunction. This distinction supports more focused neurological diagnosis, especially when the concern is a cerebral cortical lesion rather than impaired signal transmission elsewhere.
Different sensory modalities reach the cortex through specialized neural pathways, but cortical interpretation depends on their integration. Touch, pain, temperature, vision, hearing, and body position therefore contribute to a broader perceptual response rather than functioning as unrelated inputs. Examining how these modalities are organized can clarify which aspect of sensory processing is affected.
A clinical assessment can include tests of sensory discrimination, localization, stereognosis, and cortical responses. Together, these approaches examine whether the patient can process sensory information in an organized way, rather than merely detecting that a stimulus occurred. Findings can provide evidence relevant to suspected cortical dysfunction and help guide further neurological evaluation.
Results from discrimination, localization, stereognosis, and cortical-response testing can contribute to identifying lesions affecting the cerebral cortex. Their value is greatest when interpreted as evidence about sensory organization and compared with possible peripheral nerve or spinal pathway involvement. This helps clinicians refine neurological diagnosis instead of attributing every sensory deficit to the same site.
Assessment findings can support rehabilitation planning by showing which aspects of cortical sensory processing require attention. The same framework helps research teams study sensory recovery and relate clinical findings to cortical responses and perceptual abilities. Thus, testing connects clinical characterization of dysfunction with rehabilitation decisions and investigation of how sensory function may be restored.