Attention modulates the binding of information across the 2-D visual array

Liza Morton, Philippe G Schyns

Research output: Contribution to conferencePoster

Abstract

We examined the modulating role that attention exerts on the integration of information in space and time to produce the common perceptual experience of a line and a square. The design comprised a 2-D search space, made of four distinct spatial locations (one per element of a line in experiment 1 or per corner of a square in experiment 2) by eight temporal lags (linear incre- ments of 26.6 ms with an eighth lag of 400 ms). In each trial (lasting 667 ms), a fixation cross appeared first for 1 s followed by a line constructed from three synchronous and one asynchro- nous element whose position and temporal asynchrony were randomly sampled from the 2-D space. We manipulated attention with a non-predictive cue, presented for 67 ms above one element position (the left and right elements of the line in experiment 1; one of the four corners in experiment 2), but only 150 ms prior to asynchrony onset, to rule out eye movements. In a 2AFC task, observers responded whether the stimulus was continous or discontinuous. We found that the perceptions of the continuous line and square were warped in space^time around the foci of attention.

Conference

Conference25th European Conference on Visual Perception
CountryUnited Kingdom
CityGlasgow
Period25/09/0229/09/02
Internet address

Fingerprint

Eye Movements
Cues

Keywords

  • binding
  • visual perception

Cite this

Morton, L., & Schyns, P. G. (2002). Attention modulates the binding of information across the 2-D visual array. 39. Poster session presented at 25th European Conference on Visual Perception, Glasgow, United Kingdom.
Morton, Liza ; Schyns, Philippe G. / Attention modulates the binding of information across the 2-D visual array. Poster session presented at 25th European Conference on Visual Perception, Glasgow, United Kingdom.
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note = "25th European Conference on Visual Perception ; Conference date: 25-09-2002 Through 29-09-2002",
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Morton, L & Schyns, PG 2002, 'Attention modulates the binding of information across the 2-D visual array' 25th European Conference on Visual Perception, Glasgow, United Kingdom, 25/09/02 - 29/09/02, pp. 39.

Attention modulates the binding of information across the 2-D visual array. / Morton, Liza; Schyns, Philippe G.

2002. 39 Poster session presented at 25th European Conference on Visual Perception, Glasgow, United Kingdom.

Research output: Contribution to conferencePoster

TY - CONF

T1 - Attention modulates the binding of information across the 2-D visual array

AU - Morton, Liza

AU - Schyns, Philippe G

PY - 2002

Y1 - 2002

N2 - We examined the modulating role that attention exerts on the integration of information in space and time to produce the common perceptual experience of a line and a square. The design comprised a 2-D search space, made of four distinct spatial locations (one per element of a line in experiment 1 or per corner of a square in experiment 2) by eight temporal lags (linear incre- ments of 26.6 ms with an eighth lag of 400 ms). In each trial (lasting 667 ms), a fixation cross appeared first for 1 s followed by a line constructed from three synchronous and one asynchro- nous element whose position and temporal asynchrony were randomly sampled from the 2-D space. We manipulated attention with a non-predictive cue, presented for 67 ms above one element position (the left and right elements of the line in experiment 1; one of the four corners in experiment 2), but only 150 ms prior to asynchrony onset, to rule out eye movements. In a 2AFC task, observers responded whether the stimulus was continous or discontinuous. We found that the perceptions of the continuous line and square were warped in space^time around the foci of attention.

AB - We examined the modulating role that attention exerts on the integration of information in space and time to produce the common perceptual experience of a line and a square. The design comprised a 2-D search space, made of four distinct spatial locations (one per element of a line in experiment 1 or per corner of a square in experiment 2) by eight temporal lags (linear incre- ments of 26.6 ms with an eighth lag of 400 ms). In each trial (lasting 667 ms), a fixation cross appeared first for 1 s followed by a line constructed from three synchronous and one asynchro- nous element whose position and temporal asynchrony were randomly sampled from the 2-D space. We manipulated attention with a non-predictive cue, presented for 67 ms above one element position (the left and right elements of the line in experiment 1; one of the four corners in experiment 2), but only 150 ms prior to asynchrony onset, to rule out eye movements. In a 2AFC task, observers responded whether the stimulus was continous or discontinuous. We found that the perceptions of the continuous line and square were warped in space^time around the foci of attention.

KW - binding

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UR - http://journals.sagepub.com/doi/pdf/10.1177/03010066020310S101

M3 - Poster

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Morton L, Schyns PG. Attention modulates the binding of information across the 2-D visual array. 2002. Poster session presented at 25th European Conference on Visual Perception, Glasgow, United Kingdom.