Poster A2, Saturday, March 24, 1:30–3:30 pm, Exhibit Hall C
Anticipatory EEG Activity during Somatosensory Selective Attention relates with Executive Function
Staci Meredith Weiss1, Rebecca Laconi1, Peter Marshall1; 1Temple University
There is growing evidence that the ability to selectively attend to target stimuli is related to higher-order cognitive skills. We examine whether sensorimotor oscillatory EEG activity during anticipation of tactile stimulation is related to executive function (EF) in adults. During EEG collection, a visual cue directed participants’ attention to their right or left hand in preparation for tactile stimulation. Tactile stimulation was delivered via inflatable membranes attached to the index finger of the participant’s hands. Participants (N=20) also completed 3 EF tasks on the NIH Cognitive Toolbox, which included measures of behavioral inhibition (flanker), working memory and task-switching (card sort). Analyses focused on the amplitude and lateralization of the sensorimotor mu rhythm (8 – 13 Hz) during anticipation of tactile stimulation. Mu rhythm amplitude was related to the interaction between hemisphere and target hand, F = 5.57, p = .02. We observed a significant reduction in amplitude over the somatosensory cortex contralateral to the target hand, and no significant change over the ipsilateral somatosensory cortex. Further analyses related scores on EF tasks with contralateral mu rhythm activity. Results indicate that contralateral EEG activity was related to the working memory task, F= -5.30, p < .01 and marginally related to the behavioral inhibition task, F = -1.93, p = 0.06. These findings extend the literature on selective attention and EF by indexing attention to a modality (somatosensory) which is not involved in EF tasks. We discuss implications for the malleability of selective attention and development of EF.
Topic Area: ATTENTION: Multisensory