Academic journal article International Journal of Child Health and Human Development

Neurophysiologic Correlates of Sensory Modulation Disorder

Academic journal article International Journal of Child Health and Human Development

Neurophysiologic Correlates of Sensory Modulation Disorder

Article excerpt

This presentation will provide an update on recent neurophysiologic research, indicating empirical support for the long-time presumption, that Sensory Modulation Disorder (SMD) is related to anomalous physiological responses during sensory stimulation. Sensory modulation is the capacity to regulate responses to sensory input in a graded and adaptive manner. For most people, this process occurs automatically but a substantial portion of the population suffers from SMD, resulting in extreme over- or under-sensitivity to everyday stimuli.

The etiology of SMD is unknown. However, recent research has provided empirical support that SMD is related to anomalous physiological responses during sensory stimulation. For example, several studies have indicated that bio-electrical responses, which reflect autonomic arousal were recorded from children with SMD while they were presented with sensory stimuli. Using this method, the researchers showed that the EDRs of affected children were larger in amplitude, more frequent, and slower to habituate than the EDRs of typical children.

In our study, we sought evidence of an association between SMD and signs of sensory processing disturbances along the transmission route from subcortical to cortical receiving stations. …

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