Abstract
When observers are presented with targets in the context of temporal structure, performance is modulated by that structure. Interval timing mechanisms and coupled oscillators are two popular classes of model that attempt to explain how temporal structure modulates attention and motor performance to bring about the behavioral costs and benefits of temporal structure. In this experiment, participants made speeded choice reactions to targets following a series of visual warning stimuli. The warning stimuli afforded prediction of target onset time. Brain activity related to temporally focused attention and motor preparation was measured using magnetoencephalography. Parietal, cerebellar, and somatomotor activity was found to be associated with response latency and the performance benefit of the cued relative to uncued targets. Parietal activity was consistent with an interval timing mechanism, while somatomotor activity was more consistent with a coupled oscillator mechanism. Cerebellar activity had features consistent with both mechanisms. To our knowledge, this is the first evidence that both processes occur simultaneously.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.