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Peripersonal space in the brain.

Giuseppe di Pellegrino1, Elisabetta Làdavas1

  • 1Center for Studies and Research in Cognitive Neuroscience, University of Bologna, Viale Europa 980, 47521 Cesena, Italy; Department of Psychology, Universisty of Bologna, Viale Berti Pichat 5, 40127 Bologna, Italy.

Neuropsychologia
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Summary

The brain creates multiple spatial representations, focusing on peripersonal space (PPS) near the body. These representations, crucial for motor control, are shaped by multisensory integration in parietal and frontal brain regions.

Keywords:
Multisensory neuronsNeuroimagingNeurophysiologyNeuropsychologyPeripersonal spacePremotor cortexVentral intraparietal area

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Spatial Cognition

Background:

  • The brain processes spatial information through multiple representations.
  • Peripersonal space (PPS) is the immediate body-surrounding region for interaction.

Purpose of the Study:

  • To review research on peripersonal space (PPS) representation in the primate brain.
  • To understand the neural basis and multisensory integration underlying PPS.

Main Methods:

  • Review of neurophysiological studies in animals.
  • Analysis of neuropsychological investigations in monkeys and brain-damaged patients.
  • Examination of neuroimaging experiments in neurologically normal humans.

Main Results:

  • The primate brain constructs multiple, dynamic PPS representations centered on different body parts (hand, head, trunk).
  • These representations emerge from multisensory interactions within interconnected parietal and frontal brain regions.
  • PPS representations are essential for sensory-guided motor behavior and social interaction.

Conclusions:

  • Peripersonal space representation is a complex, multisensory-driven function of the primate brain.
  • Understanding PPS is key to comprehending spatial cognition, motor control, and social interactions.