Grants 2017: Dr. Carlsen awarded NSERC Discovery Grant

The Natural Sciences and Engineering Research Council of Canada (NSERC) has awarded Anthony Carlsen a 5-year discovery grant to support his program of research. The research proposal, entitled “Examining the nature of distributed neural contributions to motor preparation and initiation,” aims to determine the brain regions involved in preparing for upcoming actions.…

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Publication: A broadband acoustic stimulus is more likely than a pure tone to elicit a startle reflex and prepared movements

PDF  In order to be able to confidently assert that any RT speeding following a startling acoustic stimulus (SAS) is the result of activation in subcortical areas related to the startle reflex, a reliable indication that a startle reflex actually occurred is required. While the eye-blink response is typically used…

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Publication: Inhibition of motor-related activation during a simple reaction time task requiring visuomotor mental rotation

PDF  Seminal work by Georgopoulos and colleagues (1987) showed that reaction time (RT) increased when a rotational mental transformation had to be calculated prior to responding. A loud acoustic stimulus can be used to trigger prepared responses, so this effect was used in the current experiment to determine how preparatory activation levels in…

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Publication: Using TMS to reveal cortical excitability during preparation for a RT task.

PDF  This study investigated the entirety of the timecourse of cortico-spinal excitability changes during a reaction time task – from the time in between trials, and throughout the foreperiod and response interval. The results show a pattern of increase in excitability that occurs just after the “get ready” signal which…

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