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.
|Data di pubblicazione:||2001|
|Titolo:||Shifting attention between objects|
|Autore/i:||Iani, Cristina; R., Nicoletti; Rubichi, Sandro; C., Umilta|
|Codice identificativo ISI:||WOS:000167389800013|
|Codice identificativo Scopus:||2-s2.0-0035123278|
|Codice identificativo Pubmed:||11240118|
|Citazione:||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.|
|Tipologia||Articolo su rivista|
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