Abstract
Two experiments investigated the neural mechanisms of Gestalt grouping by recording high-density event-related brain potentials (ERPs) during discrimination tasks. In Experiment 1, stimulus arrays contained luminance-defined local elements that were either evenly spaced or grouped into columns or rows based on either proximity or similarity of shape. Proximity grouping was indexed by a short-latency positivity (110-120 ms) over the medial occipital cortex and a subsequent right occipitoparietal negativity. Grouping by similarity was reflected only in a long-latency occipitotemporal negativity. In Experiment 2, proximity grouping was examined when local elements were defined by motion cues, and was again associated with a medial occipital positivity. However, the subsequent long-latency negativity was now enhanced over the left posterior areas. The implications of these results to the neural substrates subserving different grouping processes are discussed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 926-935 |
| Number of pages | 10 |
| Journal | Psychophysiology |
| Volume | 38 |
| Issue number | 6 |
| State | Published - 2001 |
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Keywords
- Cortex
- Event-related potentials
- Gestalt
- Grouping
- Proximity
- Similarity
ASJC Scopus subject areas
- Physiology
- Physiology (medical)
- Psychology(all)
- Neuropsychology and Physiological Psychology
- Experimental and Cognitive Psychology
Cite this
Neural substrates for visual perceptual grouping in humans. / Han, Shihui; Song, Yan; Ding, Yulong; William Yund, E.; Woods, David L.
In: Psychophysiology, Vol. 38, No. 6, 2001, p. 926-935.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Neural substrates for visual perceptual grouping in humans
AU - Han, Shihui
AU - Song, Yan
AU - Ding, Yulong
AU - William Yund, E.
AU - Woods, David L
PY - 2001
Y1 - 2001
N2 - Two experiments investigated the neural mechanisms of Gestalt grouping by recording high-density event-related brain potentials (ERPs) during discrimination tasks. In Experiment 1, stimulus arrays contained luminance-defined local elements that were either evenly spaced or grouped into columns or rows based on either proximity or similarity of shape. Proximity grouping was indexed by a short-latency positivity (110-120 ms) over the medial occipital cortex and a subsequent right occipitoparietal negativity. Grouping by similarity was reflected only in a long-latency occipitotemporal negativity. In Experiment 2, proximity grouping was examined when local elements were defined by motion cues, and was again associated with a medial occipital positivity. However, the subsequent long-latency negativity was now enhanced over the left posterior areas. The implications of these results to the neural substrates subserving different grouping processes are discussed.
AB - Two experiments investigated the neural mechanisms of Gestalt grouping by recording high-density event-related brain potentials (ERPs) during discrimination tasks. In Experiment 1, stimulus arrays contained luminance-defined local elements that were either evenly spaced or grouped into columns or rows based on either proximity or similarity of shape. Proximity grouping was indexed by a short-latency positivity (110-120 ms) over the medial occipital cortex and a subsequent right occipitoparietal negativity. Grouping by similarity was reflected only in a long-latency occipitotemporal negativity. In Experiment 2, proximity grouping was examined when local elements were defined by motion cues, and was again associated with a medial occipital positivity. However, the subsequent long-latency negativity was now enhanced over the left posterior areas. The implications of these results to the neural substrates subserving different grouping processes are discussed.
KW - Cortex
KW - Event-related potentials
KW - Gestalt
KW - Grouping
KW - Proximity
KW - Similarity
UR - http://www.scopus.com/inward/record.url?scp=0035200424&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035200424&partnerID=8YFLogxK
M3 - Article
C2 - 12240669
AN - SCOPUS:0035200424
VL - 38
SP - 926
EP - 935
JO - Psychophysiology
JF - Psychophysiology
SN - 0048-5772
IS - 6
ER -