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Out of Touch? Visual Load Induces Inattentional Numbness

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Out of Touch? Visual Load Induces Inattentional Numbness

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Journal of Experimental Psychology. Human Perception and Performance [ 0096-1523 ] ; 2016.

RBID : PMC:4873046

Abstract

It is now well known that the absence of attention can leave people unaware of both visual and auditory stimuli (e.g., Dalton & Fraenkel, 2012; Mack & Rock, 1998). However, the possibility of similar effects within the tactile domain has received much less research. Here, we introduce a new tactile inattention paradigm and use it to test whether tactile awareness depends on the level of perceptual load in a concurrent visual task. Participants performed a visual search task of either low or high perceptual load, as well as responding to the presence or absence of a brief vibration delivered simultaneously to either the left or the right hand (50% of trials). Detection sensitivity to the clearly noticeable tactile stimulus was reduced under high (vs. low) visual perceptual load. These findings provide the first robust demonstration of “inattentional numbness,” as well as demonstrating that this phenomenon can be induced by concurrent visual perceptual load.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4873046

DOI: 10.1037/xhp0000218
PubMed: 26974412
PubMed Central: 4873046

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<front><div type="abstract" xml:lang="en"><p>It is now well known that the absence of attention can leave people unaware of both visual and auditory stimuli (e.g., <xref rid="c2" ref-type="bibr" id="cr2-1">Dalton & Fraenkel, 2012</xref>
; <xref rid="c13" ref-type="bibr" id="cr13-1">Mack & Rock, 1998</xref>
). However, the possibility of similar effects within the tactile domain has received much less research. Here, we introduce a new tactile inattention paradigm and use it to test whether tactile awareness depends on the level of perceptual load in a concurrent visual task. Participants performed a visual search task of either low or high perceptual load, as well as responding to the presence or absence of a brief vibration delivered simultaneously to either the left or the right hand (50% of trials). Detection sensitivity to the clearly noticeable tactile stimulus was reduced under high (vs. low) visual perceptual load. These findings provide the first robust demonstration of “inattentional numbness,” as well as demonstrating that this phenomenon can be induced by concurrent visual perceptual load.</p>
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Out of Touch? Visual Load Induces Inattentional Numbness

Out of Touch? Visual Load Induces Inattentional Numbness

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Abstract

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Pour générer des pages wiki