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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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Related Experiment Video

Updated: Apr 30, 2026

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
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Parietal cortex signals come unstuck in time.

Erik P Cook1, Christopher C Pack

  • 1Department of Physiology, McGill University, Montreal, Quebec, Canada.

Plos Biology
|November 3, 2012
PubMed
Summary

Humans excel at estimating time intervals. New research suggests the parietal cortex uses a unique strategy for time perception, particularly in sub-second intervals, during a novel temporal production task.

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Temporal Perception

Background:

  • Humans and animals possess innate abilities for estimating time durations without external aids.
  • Traditional studies assess time perception by measuring intervals between sensory events.
  • The parietal cortex is increasingly implicated in the neural basis of time perception, especially for sub-second intervals.

Purpose of the Study:

  • To investigate the role of the parietal cortex in time perception.
  • To characterize single-neuron responses during a temporal production task.
  • To explore novel strategies employed by the parietal cortex for time measurement.

Main Methods:

  • Neurophysiological recordings of single-neuron activity.
  • Performance analysis in a novel "Temporal Production" task.

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  • Observational studies of time interval estimation.

    • Main Results:

    • Single-neuron responses were characterized during the temporal production task.
    • The parietal cortex appears to employ a unique strategy for time measurement.
    • Findings highlight the parietal cortex's role in perceiving sub-second time intervals.

    Conclusions:

    • The parietal cortex plays a significant role in time perception.
    • A novel temporal production task reveals unique neural strategies.
    • Further research is needed to fully understand the parietal cortex's contribution to temporal estimation.