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Related Concept Videos

Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).

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Related Experiment Video

Updated: Jun 5, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

Simultaneous transformations of view and place coding across reference frames in the macaque brain.

Yan Huang1,2, Anran Liu1,2, Xiao Xu1,3,4

  • 1Institute of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Brain Cognition and Brain-inspired Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China.

Proceedings of the National Academy of Sciences of the United States of America
|June 3, 2026
PubMed
Summary
This summary is machine-generated.

Primate vision uses eye movements for spatial mapping. This study reveals how the brain integrates egocentric and allocentric information, showing view and place coding coexist in the hippocampus.

Keywords:
gain modulationmacaque monkeysreference frame transformationretrosplenial cortexspatial view representation

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Last Updated: Jun 5, 2026

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Primate Behavior

Background:

  • Vision is crucial for primates to navigate and map environments using eye movements.
  • The primate hippocampus contains view-related spatial coding, but its origin and relation to place coding are unclear.

Purpose of the Study:

  • To investigate the interplay between view and place coding in the primate brain.
  • To understand how egocentric and allocentric spatial information are integrated along the parietal-retrosplenial-hippocampal pathway.

Main Methods:

  • Utilized untethered neural recording, motion capture, and wireless eye tracking in macaque monkeys.
  • Examined neural activity in freely exploring macaques within an open arena.

Main Results:

  • Identified opposing gradients of egocentric and allocentric spatial coding across the studied pathway.
  • The retrosplenial cortex integrates egocentric position and allocentric gaze direction.
  • Hippocampal place coding showed both direction-dependent and direction-invariant properties, with view responses being more prevalent and modulated by gaze.

Conclusions:

  • View and place coding coexist within the primate hippocampus to varying degrees.
  • Complex view representations arise from the integration of spatial reference frames in the retrosplenial cortex.