Experiment I used a modified spatial cueing paradigm that was introduced by Egly et al. [J. Exp. Psychol. Gen. 123 (1994) 161] to investigate the cost incurred in shifting attention within an object as opposed to shifting attention between objects. Subjects were presented with two outline rectangles and had to detect a target (a luminance increment) that could appear in the cued location (valid trials), in an uncued Location inside the cued rectangle (inside-invalid trials), or in an uncued location inside the uncued rectangle (outside-invalid trials). Valid trials were faster than invalid trials, and inside-invalid trials were faster than outside-invalid trials. In Experiment 2, the two rectangles were joined to form a unitary object. Hen, no difference was found between outside-invalid trials and inside-invalid trials. Experiment 3 showed that the delayed response on outside-invalid trials in Experiment 1 was not due to attention needing to cross the figural borders in order to re-orient to the uncued rectangle. The results were interpreted as showing that an extra cost is incurred for shifting attention between different objects.

Shifting attention between objects / Iani, Cristina; R., Nicoletti; Rubichi, Sandro; C., Umilta. - In: COGNITIVE BRAIN RESEARCH. - ISSN 0926-6410. - STAMPA. - 11:(2001), pp. 157-164.

Shifting attention between objects

IANI, Cristina;RUBICHI, Sandro;
2001-01-01

Abstract

Experiment I used a modified spatial cueing paradigm that was introduced by Egly et al. [J. Exp. Psychol. Gen. 123 (1994) 161] to investigate the cost incurred in shifting attention within an object as opposed to shifting attention between objects. Subjects were presented with two outline rectangles and had to detect a target (a luminance increment) that could appear in the cued location (valid trials), in an uncued Location inside the cued rectangle (inside-invalid trials), or in an uncued location inside the uncued rectangle (outside-invalid trials). Valid trials were faster than invalid trials, and inside-invalid trials were faster than outside-invalid trials. In Experiment 2, the two rectangles were joined to form a unitary object. Hen, no difference was found between outside-invalid trials and inside-invalid trials. Experiment 3 showed that the delayed response on outside-invalid trials in Experiment 1 was not due to attention needing to cross the figural borders in order to re-orient to the uncued rectangle. The results were interpreted as showing that an extra cost is incurred for shifting attention between different objects.
11
157
164
Shifting attention between objects / Iani, Cristina; R., Nicoletti; Rubichi, Sandro; C., Umilta. - In: COGNITIVE BRAIN RESEARCH. - ISSN 0926-6410. - STAMPA. - 11:(2001), pp. 157-164.
Iani, Cristina; R., Nicoletti; Rubichi, Sandro; C., Umilta
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/304845
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