Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Selection of features within and without objects: Effects of gestalt appearance and object-based instruction on behavior and event-related brain potentials. / Verleger, Rolf; Groen, Margriet; Heide, Wolfgang et al.
In: Psychophysiology, Vol. 45, No. 3, 01.05.2008, p. 499-510.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Selection of features within and without objects: Effects of gestalt appearance and object-based instruction on behavior and event-related brain potentials
AU - Verleger, Rolf
AU - Groen, Margriet
AU - Heide, Wolfgang
AU - Sobieralska, Kinga
AU - Jaśkowski, Piotr
PY - 2008/5/1
Y1 - 2008/5/1
N2 - We studied how physical and instructed embedding of features in gestalts affects perceptual selection. Four ovals on the horizontal midline were either unconnected or pairwise connected by circles, forming ears of left and right heads (gestalts). Relevant to responding was the position of one colored oval, either within its pair or relative to fixation (?object-based? or ?fixation-based? instruction). Responses were faster under fixation- than object-based instruction, less so with gestalts. Previously reported increases of N1 when evoked by features within objects were replicated for fixation-based instruction only. There was no effect of instruction on N2pc. However P1 increased under the adequate instruction, object-based for gestalts, fixation-based for unconnected items, which presumably indicated how foci of attention were set by expecting specific stimuli under instructions that specified how to bind these stimuli to objects.
AB - We studied how physical and instructed embedding of features in gestalts affects perceptual selection. Four ovals on the horizontal midline were either unconnected or pairwise connected by circles, forming ears of left and right heads (gestalts). Relevant to responding was the position of one colored oval, either within its pair or relative to fixation (?object-based? or ?fixation-based? instruction). Responses were faster under fixation- than object-based instruction, less so with gestalts. Previously reported increases of N1 when evoked by features within objects were replicated for fixation-based instruction only. There was no effect of instruction on N2pc. However P1 increased under the adequate instruction, object-based for gestalts, fixation-based for unconnected items, which presumably indicated how foci of attention were set by expecting specific stimuli under instructions that specified how to bind these stimuli to objects.
KW - Objects
KW - Selective attention
KW - Event-related potentials
KW - P1
KW - N1
KW - N2pc
U2 - 10.1111/j.1469-8986.2008.00646.x
DO - 10.1111/j.1469-8986.2008.00646.x
M3 - Journal article
VL - 45
SP - 499
EP - 510
JO - Psychophysiology
JF - Psychophysiology
SN - 0048-5772
IS - 3
ER -