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Related Concept Videos

Somatosensation01:33

Somatosensation

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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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Sensory Perception: Organization of the Somatosensory System01:11

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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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Vision01:24

Vision

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Related Experiment Video

Updated: Mar 22, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
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Stimulus features coded by single neurons of a macaque body category selective patch.

Ivo D Popivanov1, Philippe G Schyns2, Rufin Vogels3

  • 1Laboratorium voor Neuro- en Psychofysiologie, KU Leuven Medical School, 3000 Leuven, Belgium; Department of Cognitive Science and Psychology, New Bulgarian University, 1618 Sofia, Bulgaria;

Proceedings of the National Academy of Sciences of the United States of America
|April 13, 2016
PubMed
Summary

Neurons in the primate brain

Keywords:
body perceptionbody selective areafeature selectivityinferior temporal cortexmacaque

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Area of Science:

  • Neuroscience
  • Primate Vision
  • Computational Neuroscience

Background:

  • Body category-selective regions in the primate temporal cortex respond to body images.
  • The specific image fragments driving these neurons' responses remain unclear.

Purpose of the Study:

  • To investigate which image fragments activate single neurons in the macaque middle superior temporal sulcus (midSTS) body patch.
  • To understand the coding properties of these neurons regarding body parts.

Main Methods:

  • Applied the Bubbles technique to record responses of single macaque midSTS body patch neurons.
  • Analyzed neuronal responses to localized image fragments.

Main Results:

  • The majority of neurons responded to local image fragments like extremities, curved boundaries, and torso parts.
  • Neuronal coding was tolerant to translation and scale changes.
  • Some neurons exhibited opponent coding with both excitatory and inhibitory fragments.

Conclusions:

  • Body category selectivity in the midSTS is primarily driven by frequently occurring local image features, not abstract semantic categories.
  • Neural coding relies on feature statistics of bodies, such as the prevalence of extensions.