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• W2955821208 abstract "Abstract Higher cognitive ability is reliably linked to better performance on chronometric tasks (i.e., faster reaction times, RT), yet the neural basis of these effects remains unclear. Anticipatory processes represent compelling yet understudied potential mechanisms of these effects, which may facilitate performance through reducing the uncertainty surrounding the temporal onset of stimuli (temporal uncertainty) and/or facilitating motor readiness despite uncertainty about impending target locations (target uncertainty). Specifically, the contingent negative variation (CNV) represents a compelling candidate mechanism of anticipatory motor planning, while the alpha oscillation is thought to be sensitive to temporal contingencies in perceptual systems. The current study undertook a secondary analysis of a large data set ( n = 91) containing choice RT, cognitive ability, and EEG measurements to help clarify these issues. Single‐trial EEG analysis in conjunction with mixed‐effects modeling revealed that higher fluid intelligence corresponded to faster RT on average. When considered together, temporal and target uncertainty moderated the RT‐ability relationship, with higher ability being associated with greater resilience to both types of uncertainty. Target uncertainty attenuated the amplitude of the CNV for all participants, but higher ability individuals were more resilient to this effect. Similarly, only higher ability individuals showed increased prestimulus alpha power (at left‐lateralized sites) during longer, more easily anticipated interstimulus intervals. Collectively, these findings emphasize top‐down anticipatory processes as likely contributors to chronometry‐ability correlations." @default.
• W2955821208 created "2019-07-12" @default.
• W2955821208 creator A5015749782 @default.
• W2955821208 creator A5052846327 @default.
• W2955821208 date "2019-06-26" @default.
• W2955821208 modified "2023-09-25" @default.
• W2955821208 title "Neural anticipatory mechanisms predict faster reaction times and higher fluid intelligence" @default.
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