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Related Concept Videos

Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

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The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
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Sensory receptors are specialized neurons that respond to specific types of external stimuli, initiating the process known as sensation. This occurs when sensory input, such as light entering the eye, is detected by these receptors, causing chemical changes in the cells of the retina. These cells then convert the sensory stimulus into action potentials that are transmitted to the central nervous system, a process termed transduction.
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Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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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.
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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
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Measurement in Sensory Modulation: the Sensory Processing Scale Assessment.

Sarah A Schoen1, Lucy J Miller2, Jillian C Sullivan3

  • 1Sarah A. Schoen, PhD, OTR, is Associate Director of Research, Sensory Processing Disorder Foundation, 5420 South Quebec Street, Suite 135, Greenwood Village, CO 80111, and Associate Professor, Rocky Mountain University of Health Professions, Provo, UT; schoen@spdfoundation.net.

The American Journal of Occupational Therapy : Official Publication of the American Occupational Therapy Association
|September 4, 2014
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Summary

The new Sensory Processing Scale (SPS) Assessment reliably measures sensory modulation issues. This tool aids in differentiating sensory processing disorders for better diagnosis and treatment planning.

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Occupational Therapy

Background:

  • Sensory modulation issues significantly impact daily life participation.
  • Understanding phenotypic variation is crucial for research and clinical treatment planning.
  • Phenotypic variation in sensory modulation dysfunction requires precise measurement tools.

Purpose of the Study:

  • To evaluate the reliability and validity of the new Sensory Processing Scale (SPS) Assessment.
  • To assess the SPS Assessment's utility in measuring sensory modulation.
  • To determine the potential of the SPS Assessment in aiding differential diagnosis.

Main Methods:

  • Item development and refinement based on reliability and expert feedback.
  • Development of a behavioral scoring system for the assessment.
  • Test administration and item analyses to ensure validity and reliability across sensory domains.

Main Results:

  • Items with adequate internal reliability (>.4) and discriminant validity (p < .01) were retained.
  • Expert panel feedback informed item selection and scale construction.
  • The SPS Assessment demonstrated high scale reliability (>.90) and strong discrimination between group effect sizes (>1.00).

Conclusions:

  • The Sensory Processing Scale (SPS) Assessment is a reliable and valid tool for measuring sensory modulation.
  • The SPS Assessment shows potential for differential diagnosis of sensory modulation issues.
  • This scale can support clinical decision-making and research in sensory processing disorders.