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Changes in connectivity profiles as a mechanism for strategic control over interfering subliminal information

Wolbers, T, Schoell, ED, Verleger, R, Kraft, S, McNamara, A, Jaskowski, P and Buchel, C (2006) Changes in connectivity profiles as a mechanism for strategic control over interfering subliminal information Cereb Cortex, 16 (6). pp. 857-864.

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Human behavior can be influenced by information that is not consciously perceived. Recent behavioral and electrophysiological evidence suggests, however, that the processing of subliminal stimuli is not completely beyond an observer's conscious control. The present study aimed to characterize the cortical network that implements strategic control over interfering subliminal information at multiple stages. Fourteen participants underwent functional magnetic resonance imaging (fMRI) scanning while performing a metacontrast masking paradigm. We systematically varied the amount of conflicting versus non-conflicting trials across experimental blocks, and behavioral performance demonstrated strategic effects whenever a high proportion of subliminal prime stimuli induced response competition. A psychophysiological interaction analysis revealed the pre-supplementary motor area (pre-SMA) to exhibit context-dependent covariation with activation in the lateral occipital complex (LOC) and the putamen. The pre-SMA thereby appears to fulfill a superordinate function in the control of processing subliminal information by simultaneously modulating perceptual analysis and motor selection.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Wolbers, T
Schoell, ED
Verleger, R
Kraft, S
Jaskowski, P
Buchel, C
Date : 2006
Uncontrolled Keywords : Adaptation, Physiological/physiology Adult Attention/*physiology Brain Mapping Cognition/*physiology Feedback/physiology Female Humans Magnetic Resonance Imaging/methods Male Motor Cortex/*physiology Nerve Net/physiology Neural Pathways/*physiology Perceptual Masking/*physiology Psychomotor Performance/physiology *Subliminal Stimulation *Unconscious (Psychology)
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 09:09
Last Modified : 24 Jan 2020 16:10

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