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: Neural processes mediating the preparation and release of focal motor output are suppressed or absent during imagined movement

PDF  This study investigated whether movements that were “imaged” or “imagined” to be executed involved a build up of preparatory activation in brain structures in a similar way as movements that were actually executed. By using a loud startling acoustic stimulus, we are able to elicit pre-planned movements if they…

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Publication: Responses to startling acoustic stimuli indicate that movement‐related activation is constant prior to action: a replication with an alternate interpretation

PDF  This study is a replication of a previous experiment that investigated how movement-related brain activation changes as a go-stimulus approaches in time. The previous experiment used a startle to show that activity increased in short time prior to the go-signal. However, startle activity was not reported, so this was only…

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Publication: Increased stability of bimanual coordination following transcranial direct current stimulation (tDCS) applied over the supplementary motor area (SMA)

 In this study subjects performed a bimanual coordination task, where spontaneous transitions between states is observed at higher oscillation frequencies. For example, when limbs are moved in a parallel fashion (like windshield wipers on a car) a transition is seen at faster speeds whereby subjects spontaneously change to performing mirror-symmetrical…

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