The grouping benefit in extinction: Overcoming the temporal order bias.

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The grouping benefit in extinction: Overcoming the temporal order bias. / Rappaport, Sarah; Jane Riddoch, M; Humphreys, Glyn.

In: Neuropsychologia, 17.11.2010.

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@article{7f08cf5ddbc7424a84c20cb618734093,
title = "The grouping benefit in extinction: Overcoming the temporal order bias.",
abstract = "Grouping between contra- and ipsilesional stimuli can alleviate the lateralised bias in spatial extinction (Gilchrist, Humphreys, & Riddoch, 1996; Ward, Goodrich, & Driver, 1994). In the current study we demonstrate for the first time that perceptual grouping can also modulate the spatio/temporal biases in temporal order judgements affecting the temporal as well as the spatial coding of stimuli. Perceived temporal order was assessed by presenting two coloured letter stimuli in either hemi-field temporally segregated by a range of onset-intervals. Items were either identical (grouping condition) or differed in both shape and colour (non-grouping condition). Observers were required to indicate which item appeared second. Patients with visual extinction had a bias against the contralesional item appearing first, but this was modulated by perceptual grouping. When both items were identical in shape and colour the temporal bias against reporting the contralesional item was reduced. The results suggest that grouping can alter the coding of temporal relations between stimuli.",
author = "Sarah Rappaport and {Jane Riddoch}, M and Glyn Humphreys",
year = "2010",
month = nov,
day = "17",
doi = "10.1016/j.neuropsychologia.2010.11.011",
language = "English",
journal = "Neuropsychologia",
issn = "0028-3932",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The grouping benefit in extinction: Overcoming the temporal order bias.

AU - Rappaport, Sarah

AU - Jane Riddoch, M

AU - Humphreys, Glyn

PY - 2010/11/17

Y1 - 2010/11/17

N2 - Grouping between contra- and ipsilesional stimuli can alleviate the lateralised bias in spatial extinction (Gilchrist, Humphreys, & Riddoch, 1996; Ward, Goodrich, & Driver, 1994). In the current study we demonstrate for the first time that perceptual grouping can also modulate the spatio/temporal biases in temporal order judgements affecting the temporal as well as the spatial coding of stimuli. Perceived temporal order was assessed by presenting two coloured letter stimuli in either hemi-field temporally segregated by a range of onset-intervals. Items were either identical (grouping condition) or differed in both shape and colour (non-grouping condition). Observers were required to indicate which item appeared second. Patients with visual extinction had a bias against the contralesional item appearing first, but this was modulated by perceptual grouping. When both items were identical in shape and colour the temporal bias against reporting the contralesional item was reduced. The results suggest that grouping can alter the coding of temporal relations between stimuli.

AB - Grouping between contra- and ipsilesional stimuli can alleviate the lateralised bias in spatial extinction (Gilchrist, Humphreys, & Riddoch, 1996; Ward, Goodrich, & Driver, 1994). In the current study we demonstrate for the first time that perceptual grouping can also modulate the spatio/temporal biases in temporal order judgements affecting the temporal as well as the spatial coding of stimuli. Perceived temporal order was assessed by presenting two coloured letter stimuli in either hemi-field temporally segregated by a range of onset-intervals. Items were either identical (grouping condition) or differed in both shape and colour (non-grouping condition). Observers were required to indicate which item appeared second. Patients with visual extinction had a bias against the contralesional item appearing first, but this was modulated by perceptual grouping. When both items were identical in shape and colour the temporal bias against reporting the contralesional item was reduced. The results suggest that grouping can alter the coding of temporal relations between stimuli.

U2 - 10.1016/j.neuropsychologia.2010.11.011

DO - 10.1016/j.neuropsychologia.2010.11.011

M3 - Article

C2 - 21093463

JO - Neuropsychologia

JF - Neuropsychologia

SN - 0028-3932

ER -