The effect of dynamic stimuli on attention under different perceptual loads
Yuanli Li, Yoshihiro Shimomura

TL;DR
This study explores how dynamic visual distractions affect attention depending on the perceptual load, using behavioral and brain activity measures.
Contribution
The study reveals how different perceptual loads modulate attentional capture by dynamic stimuli through distinct neural mechanisms.
Findings
Dynamic stimuli increased P1 and P3 amplitudes, indicating early sensory and attentional processing.
N1 amplitude was more negative without dynamic stimuli, showing sensitivity to their presence.
P3 amplitude was more positive under low perceptual load, suggesting better attentional allocation.
Abstract
Perceptual load is a major determinant of visual attentional selection patterns, and dynamic stimuli are salient bottom-up distractors. The present study investigated how dynamic stimuli, presented under different perceptual loads, impact the process of visual attentional selection. Fourteen participants (8 females and 6 males) were measured on task performance (reaction time and correctness) and event-related potentials while searching for visual exploratory task in a perceptual load paradigm. In terms of behavioral performance, longer reaction times were required for the visual exploratory task under high perceptual load, whereas a trend suggestive of attentional capture reversal emerged under low perceptual load. Regarding ERP components, the P1 amplitude was more positive in the response to dynamic stimuli, while the N1 amplitude was more negative when dynamic stimuli were absent.…
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Taxonomy
TopicsNeural and Behavioral Psychology Studies · Visual perception and processing mechanisms · Color perception and design
