Cited by 232Visual perception and processing mechanismsMultisensory perception and integrationVestibular and auditory disorders

Heading encoding in the macaque ventral intraparietal area (VIP)

Bremmer, Frank, Duhamel, Jean‐René, Ben Hamed, Suliann, Graf, Werner·2002·European Journal of Neuroscience

Abstract

We recorded neuronal responses to optic flow stimuli in the ventral intraparietal area (VIP) of two awake macaque monkeys. According to previous studies on optic flow responses in monkey extrastriate cortex we used different stimulus classes: frontoparallel motion, radial stimuli (expansion and contraction) and rotational stimuli (clockwise and counter-clockwise). Seventy-five percent of the cells showed statistically significant responses to one or more of these optic flow stimuli. Shifting the location of the singularity of the optic flow stimuli within the visual field led to a response modulation in almost all cases. For the majority of neurons, this modulatory influence could be approximated in a statistically significant manner by a two-dimensional linear regression. Gradient directions, derived from the regression parameters and indicating the direction of the steepest increase in the responses, were uniformly distributed. At the population level, an unbiased average response for the stimuli with different focus locations was observed. By applying a population code, termed 'isofrequency encoding', we demonstrate the capability of the recorded neuronal ensemble to retrieve the focus location from its population discharge. Responses to expansion and contraction stimuli cannot be predicted based on quantitative data on a neuron's frontoparallel preferred stimulus direction and the location and size of its receptive field. These results, taken together with data on polymodal motion responses in this area, suggest an involvement of area VIP in the analysis and the encoding of heading.

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Crossref · 10.1046/j.1460-9568.2002.02207.x

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  • Multisensory peripersonal space neurons integrate tactile, visual, and auditory stimuli when presented at a limited distance from the body, but not when further away; this limit defines the boundary of peripersonal space.

    “Multisensory PPS neurons integrate tactile, visual, and auditory stimuli when presented at a limited distance from the body (Rizzolatti, Fadiga, Fogassi, & Gallese, 1997; Graziano & Cooke, 2006; Bremmer at al, 2002; Makin et al., 2007; Gentile et al., 2011), but not when further away. This limit defines the boundary of PPS”

    From Peripersonal space as the space of the bodily self (2015) · cites this paper as Bremmer at al, 2002

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Authors
Bremmer, F., Duhamel, J., Ben Hamed, S., & Graf, W.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Bremmer, Frank
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2002-10
Volume
16
Issue
8
Pages
1554-1568
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W2086569041
Cited by
232
References
41
Citations by year
2026: 6 · 2025: 9 · 2024: 9 · 2023: 5 · 2022: 8 · 2021: 15 · 2020: 7 · 2019: 6 · 2018: 11 · 2017: 15 · 2016: 12 · 2015: 10 · 2014: 12 · 2013: 13 · 2012: 8
FWCI
4.51
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
European Commission
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
  • Life Sciences › Neuroscience › Neurology › Vestibular and auditory disorders
Keywords
ventral intraparietal area, optical flow, macaque, population coding, rotational motion, receptive fields, extrastriate cortex
MeSH terms
Action Potentials, Animals, Female, Macaca fascicularis, Macaca mulatta, Motion Perception, Neurons, Orientation, Parietal Lobe, Photic Stimulation, Space Perception, Visual Cortex, Visual Fields

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