Cited by 129Multisensory perception and integrationVisual perception and processing mechanismsNeuroscience and Music Perception

Responses to Auditory Stimuli in Macaque Lateral Intraparietal Area I. Effects of Training

Grunewald, Alexander, Linden, Jennifer F., Andersen, Richard A.·1999·Journal of Neurophysiology

Abstract

The lateral intraparietal area (LIP) of macaques has been considered unresponsive to auditory stimulation. Recent reports, however, indicate that neurons in this area respond to auditory stimuli in the context of an auditory-saccade task. Is this difference in auditory responsiveness of LIP due to auditory-saccade training? To address this issue, LIP responses in two monkeys were recorded at two different times: before and after auditory-saccade training. Before auditory-saccade training, the animals had never been trained on any auditory task, but had been trained on visual tasks. In both sets of experiments, activity of LIP neurons was recorded while auditory and visual stimuli were presented and the animals were fixating. Before training, 172 LIP neurons were recorded. Among these, the number of cells responding to auditory stimuli did not reach significance, whereas about one-half of the cells responded to visual stimuli. An information theory analysis confirmed that no information about auditory stimulus location was available in LIP neurons in the experiments before training. After training, activity from 160 cells was recorded. These experiments showed that 12% of cells in area LIP responded to auditory stimuli, whereas the proportion of cells responding to visual stimuli remained about the same as before training. The information theory analysis confirmed that, after training, information about auditory stimulus location was available in LIP neurons. Auditory-saccade training therefore generated responsiveness to auditory stimuli de novo in LIP neurons. Thus some LIP cells become active for auditory stimuli in a passive fixation task, once the animals have learned that these stimuli are important for oculomotor behavior.

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Crossref · 10.1152/jn.1999.82.1.330

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Authors
Grunewald, A., Linden, J. F., & Andersen, R. A.
Affiliations
  • Division of Biology and
  • California Institute of Technology (US)
Venue
Journal of Neurophysiology
Published
1999-07-01
Volume
82
Issue
1
Pages
330-342
ISSN
  • 0022-3077 (ISSN-L)
  • 1522-1598
OpenAlex
W2199619069
Cited by
129
References
51
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 2 · 2017: 4 · 2016: 1 · 2015: 4 · 2014: 3 · 2013: 4 · 2012: 6
FWCI
12.62
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurophysiology (publishedVersion)
  • PubMed (publishedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroscience and Music Perception
Keywords
lateral intraparietal area, auditory responses, macaque, oculomotor behavior, information theory, visual responses
MeSH terms
Acoustic Stimulation, Animals, Conditioning, Psychological, Feedback, Fixation, Ocular, Functional Laterality, Macaca mulatta, Male, Neurons, Oculomotor Muscles, Parietal Lobe, Photic Stimulation, Reaction Time, Saccades, Time Factors

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