Psychonomic Bulletin & Review

, Volume 21, Issue 6, pp 1452–1458 | Cite as

The nature of altered vision near the hands: Evidence for the magnocellular enhancement account from object correspondence through occlusion

Brief Report

Abstract

A growing body of evidence indicates that the perception of visual stimuli is altered when they occur near the observer’s hands, relative to other locations in space (see Brockmole, Davoli, Abrams, & Witt, 2013, for a review). Several accounts have been offered to explain the pattern of performance across different tasks. These have typically focused on attentional explanations (attentional prioritization and detailed attentional evaluation of stimuli in near-hand space), but more recently, it has been suggested that near-hand space enjoys enhanced magnocellular (M) input. Here we differentiate between the attentional and M-cell accounts, via a task that probes the roles of position consistency and color consistency in determining dynamic object correspondence through occlusion. We found that placing the hands near the visual display made observers use only position consistency, and not color, in determining object correspondence through occlusion, which is consistent with the fact that M cells are relatively insensitive to color. In contrast, placing observers’ hands far from the stimuli allowed both color and position contribute. This provides evidence in favor of the M-cell enhancement account of altered vision near the hands.

Keywords

Object correspondence Attention Embodied cognition Magnocellular Perihand space 

Notes

Author note

This research was supported by an Australian Research Council (ARC) Discovery Early Career Research Award (DECRA) awarded to S.C.G. (No. DE140101734), and by an NSERC discovery grant awarded to J.P. The authors thank Peter Zhang and Erin Walsh for assistance with the data collection.

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Copyright information

© Psychonomic Society, Inc. 2014

Authors and Affiliations

  • Stephanie C. Goodhew
    • 1
  • Nicole Fogel
    • 2
  • Jay Pratt
    • 2
  1. 1.Research School of PsychologyBuilding 39 The Australian National UniversityCanberraAustralia
  2. 2.Department of PsychologyUniversity of TorontoTorontoCanada

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