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Related Concept Videos

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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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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
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The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
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Cross-Modal Multivariate Pattern Analysis
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Brief Encounters with Real Objects Modulate the Medial Parietal But Not Occipitotemporal Cortex.

Susan G Wardle1, Beth Rispoli2,3, Vinai Roopchansingh4

  • 1Section on Learning and Plasticity, Laboratory of Brain and Cognition, National Institute of Mental Health, NIH, Bethesda, Maryland 20814 susan.wardle@nih.gov.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|November 5, 2025
PubMed
Summary
This summary is machine-generated.

Real-world object exploration does not alter visual brain representations but engages memory regions. This suggests the brain separately codes visual appearance from real-world experience for object recognition.

Keywords:
fMRIinvarianceobject recognitionoccipitotemporal cortexreal-worldvisual memory

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Perception

Background:

  • Humans excel at recognizing objects from images, but the impact of real-world experience on brain representations of photographed objects remains unclear.
  • Understanding how prior physical interaction influences visual processing of object images is crucial for cognitive science.

Purpose of the Study:

  • To investigate how brief real-world manual exploration of objects affects their neural representation during subsequent image viewing.
  • To determine if tactile and motor experiences modulate visual object processing in the brain.

Main Methods:

  • Developed a paradigm involving manual object exploration before functional magnetic resonance imaging (fMRI) scans.
  • Participants (40) viewed images of objects after brief real-world interaction with them.
  • Analyzed brain activity in object-responsive visual cortex and medial parietal regions.

Main Results:

  • Visual representations in the lateral occipital and ventral temporal cortex were not modulated by prior real-world exploration.
  • Repetition suppression of the BOLD response was observed in visual areas, indicating adaptation to repeated image presentations.
  • Real-world experience increased activation in the medial parietal and posterior cingulate cortex, areas linked to memory encoding and retrieval.

Conclusions:

  • The human brain appears to maintain separable neural codes for an object's visual appearance and its associated real-world experiences.
  • Medial parietal and posterior cingulate cortex activation suggests familiarity modulation is not stimulus or task-specific.
  • Object recognition involves distinct processing of visual form and experiential associations, impacting computational models and our understanding of object representation.