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Pregled bibliografske jedinice broj: 549587

Underlying mechanisms of classical and inverted White's effect: a reaction time study


Rebić, Veseljka
Underlying mechanisms of classical and inverted White's effect: a reaction time study // 20. Danir Ramira i Zorana Bujasa - sažeci priopćenja / Čorkalo Biruški, Dinka ; Vukasović, Tena (ur.).
Zagreb: Filozofski fakultet u Zagrebu, 2011. str. 158-158 (predavanje, domaća recenzija, sažetak, znanstveni)


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Naslov
Underlying mechanisms of classical and inverted White's effect: a reaction time study

Autori
Rebić, Veseljka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
20. Danir Ramira i Zorana Bujasa - sažeci priopćenja / Čorkalo Biruški, Dinka ; Vukasović, Tena - Zagreb : Filozofski fakultet u Zagrebu, 2011, 158-158

ISBN
978-953-175-391-3

Skup
20. Dani Ramira i Zorana Bujasa

Mjesto i datum
Zagreb, Hrvatska, 07-09.04.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
klasična Whiteova varka; invertirana Whiteova varka; vrijeme reakcije;
(classical White's effect; inverted White's effect; reaction time)

Sažetak
In White’s (1979) illusion of lightness, intermediate luminance patches appear darker when their immediate surround is comprised of black stripes and appear lighter when their immediate surround is comprised of white stripes. In this classical form of White’s illusion, the direction of the induced brightness change does not correlate with the amount of black or white border in contact with the intermediate patch. Some studies have shown that classical White effect arises only when intermediate luminance patch lies between minimum and maximum luminance values of the inducing stripes. With patches either darker or lighter than both inducing stripes, the direction of the brightness effect is reversed. Several theoretical explanations and models have been proposed, ranging from low-level neuronal approaches to complex models of high-level cortical processing. Interestingly, majority of models accounts only for classical White’s effect, leaving inverted variants unexplained. Aim of this study was to test the role of early neural processing in variants of White’s effect, by comparing subjective lightness matches and simple reaction time (SRT) to intermediate luminance patches imbedded in lighter or darker inducing stripe. It is generally assumed that SRT latency represents effect of the stimulus intensity on the latency of early sensory processing. Therefore, if perceived lightness indeed depends on the mechanisms in early visual stages, SRT should be shorter for the luminance patch that is perceived as brighter. Three experiments were performed (1) for classical White’s effect, (2) for double decrement variant of inverted effect (intermediate patch as highest luminance) and (3) for double increment variant of inverted effect (intermediate patch as lowest luminance). Results show that illusion does not invert as expected, and that SRT does not fully correlate with perceived luminance. Results are discussed in terms of existing explanations of White’s effect.

Izvorni jezik
Engleski

Znanstvena područja
Psihologija



POVEZANOST RADA


Projekt / tema
130-0000000-3295 - Integracija informacija kao osnova cjelovitog doživljavanja (Ivanec, Dragutin, MZOS - )

Ustanove
Filozofski fakultet, Zagreb

Profili:

Avatar Url Veseljka Rebić (autor)

Citiraj ovu publikaciju

Rebić, Veseljka
Underlying mechanisms of classical and inverted White's effect: a reaction time study // 20. Danir Ramira i Zorana Bujasa - sažeci priopćenja / Čorkalo Biruški, Dinka ; Vukasović, Tena (ur.).
Zagreb: Filozofski fakultet u Zagrebu, 2011. str. 158-158 (predavanje, domaća recenzija, sažetak, znanstveni)
Rebić, V. (2011) Underlying mechanisms of classical and inverted White's effect: a reaction time study. U: Čorkalo Biruški, D. & Vukasović, T. (ur.)20. Danir Ramira i Zorana Bujasa - sažeci priopćenja.
@article{article, author = {Rebi\'{c}, V.}, year = {2011}, pages = {158-158}, keywords = {classical White's effect, inverted White's effect, reaction time}, isbn = {978-953-175-391-3}, title = {Underlying mechanisms of classical and inverted White's effect: a reaction time study}, keyword = {classical White's effect, inverted White's effect, reaction time}, publisher = {Filozofski fakultet u Zagrebu}, publisherplace = {Zagreb, Hrvatska} }




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