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Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
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Temporal judgments in multi-sensory space.

Chrysa Retsa1, Peter Naish2, Tristan Bekinschtein3

  • 1Department of Psychology, University of Edinburgh, UK; The Laboratory for Investigative Neurophysiology (The LINE), Department of Clinical Neurosciences and Department of Radiology, University Hospital Center and University of Lausanne, Switzerland.

Neuropsychologia
|February 23, 2016
PubMed
Summary
This summary is machine-generated.

Spatial location influences how we perceive stimulus duration, especially in mixed visual and auditory tasks. An error mechanism may compensate for attention shifts, causing temporal biases in duration judgments.

Keywords:
Auditory durationDuration discriminationLocationSpatial attentionVisual

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Sensory Perception

Background:

  • Environmental interaction relies on spatio-temporal stimulus recognition from multiple senses.
  • Auditory stimuli are perceived as longer than visual stimuli of equal duration.
  • Stimulus location may affect duration perception.

Purpose of the Study:

  • To investigate how lateral spatial presentation influences sub-second visual and auditory duration judgments.
  • To examine the effect of location on duration perception across different sensory modalities.
  • To explore the role of spatial attention shifts in temporal bias.

Main Methods:

  • Utilized the duration discrimination paradigm with sequential stimuli.
  • Conducted five experiments varying stimulus positions and modality presentation (mixed vs. blocked).
  • Performed within-modality and across-modality comparisons.

Main Results:

  • No consistent effect of location on duration perception was observed in general.
  • Mixed modality experiments showed duration over-estimation for visual stimuli when location shifted, and under-estimation when location was constant.
  • Auditory duration judgments remained unaffected by location manipulations.

Conclusions:

  • Proposed an error-mechanism that adds duration to compensate for perceptual loss due to spatial attention shifts.
  • This mechanism is evident in mixed-modality, spatially-varying conditions, leading to temporal biases.
  • Spatial attention shifts significantly impact temporal perception, particularly in cross-modal contexts.