Conflicting sensory information sharpens the neural representations of early selective visuospatial attention

感觉系统 认知心理学 心理学 神经科学 认知科学
作者
Panchalee Sookprao,Kanyarat Benjasupawan,Tanagrit Phangwiwat,Itthi Chatnuntawech,Kanda Lertladaluck,Angela Gutchess,Chaipat Chunharas,Sirawaj Itthipuripat
出处
期刊:The Journal of Neuroscience [Society for Neuroscience]
卷期号:: e2012232024-e2012232024
标识
DOI:10.1523/jneurosci.2012-23.2024
摘要

Adaptive behaviors require the ability to resolve conflicting information caused by the processing of incompatible sensory inputs. Prominent theories of attention have posited that early selective attention helps mitigate cognitive interference caused by conflicting sensory information by facilitating the processing of task-relevant sensory inputs and filtering out behaviorally irrelevant information. Surprisingly, many recent studies that investigated the role of early selective attention on conflict mitigation have failed to provide positive evidence. Here, we examined changes in the selectivity of early visuospatial attention in male and female human subjects performing an attention-cueing Eriksen flanker task, where they discriminated the shape of a visual target surrounded by congruent or incongruent distractors. We used the inverted encoding model to reconstruct spatial representations of visual selective attention from the topographical patterns of amplitude modulations in alpha-band oscillations in scalp EEG (∼8-12Hz). We found that the fidelity of the alpha-based spatial reconstruction was significantly higher in the incongruent compared to the congruent condition. Importantly, these conflict-related modulations in the reconstruction fidelity occurred at a much earlier time window than those of the lateralized posterior event-related potentials (ERPs) associated with target selection and distractor suppression processes, as well as conflict-related modulations in the fronto-central negative-going wave and midline-frontal theta oscillations (∼3-7 Hz), thought to track executive control functions. Taken together, our data suggest that conflict resolution is supported by the cascade of neural processes underlying early selective visuospatial attention and frontal executive functions that unfold over time.
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