Odnos forme, prostorne organizacije i vizuelne pažnje u opažanju iluzornih kontura

Abstract

Cilj istraživanja bio je da se ispita uloga forme, prostorne organizacije okruženja i vizuelne pažnje u zadatku vizuelne pretrage iluzornih kontura. Izvedena su tri eksperimenta u kojima je primenjena klasična varijanta zadatka vizuelne pretrage. U prvom eksperimentu, subjekti su detektovali kvadratnu formu među vertikalno i horizontalno orijentisanim linijama. U ostalim eksperimentima, zadatak subjekata bio je da traže iluzornu kvadratnu formu koja je bila smeštena u različito prostorno organizovanim setovima. Na ovaj način je ispitivan uticaj istaknutosti mete unutar različito organizovanih setova. Rezultati pokazuju da je vizuelna pretraga celovite forme paralelna dok su pretrage iluzornih kontura dosledno pokazale serijalni profil. Pored toga, pokazano je da prostorna organizacija seta ima važnu ulogu u detekciji iluzorne forme. Bez obzira na serijalni profil, utvrđeno je da su pretrage brže u slučajevima gde je stepen istaknutosti mete u odnosu na distraktore bio veći.

Laboratory of Experimental Psychology, University of Belgrade The aim of the study was the investigation of form, spatial set organization and visual attention in visual search of illusory contours. Three visual search experiments were conducted. In the first experiment, where the simple detection procedure was used, subject's task was to detect square among vertical and horizontal lines. Other experiments investigated visual search of illusory contours in four different set organizations. Introduction of set organization was the way of manipulation of target's eccentricity among other elements. Analysis showed different type of search of the regular and the illusory square figure. The search profile of the regular square proved to be parallel, while all the searches of the illusory squares remained serial. Set organization had important role in visual search of illusory contours. Regardless of serial profile, visual search was faster in cases where target figure was more salient due to the background elements organization.