Feature Binding in the Visual Modality Depends on Attention: Analysis of Mismatch Negativity.

Autor:	Sayfulina, K. E., Lazarev, I. E., Chernysheva, E. G., Chernyshev, B. V.
Předmět:	VISUAL perception VISUAL discrimination SELECTIVITY (Psychology) ATTENTION EVOKED potentials (Electrophysiology)
Zdroj:	Neuroscience & Behavioral Physiology; 2020, Vol. 50 Issue 2, p173-182, 10p
Abstrakt:	This study address the question of whether attention is required for binding of features in the visual modality. Subjects performed a task based on discrimination of visual stimuli – Gabor grids – characterizing two features: the spatial frequency and the tilt angle. Deviant stimuli could be detected on the background of standard stimuli only using a combination of features, not single features. Event-related potentials were analyzed in four experimental conditions: selective attention to the target stimulus; selective neglect of the nontarget stimulus; distributed attention to all visual stimuli; intermodal distraction of attention from the visual modality to the auditory modality. Mismatch negativity was significantly present only in the situation of attention to visual stimuli – both selective and distributed. These results showed that binding of features occurred only in the situation of attention to visual stimuli. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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