Publication: Startle activation is additive with voluntary cortical activation irrespective of stimulus modality

  PDF    This paper investigated whether an additive model of activation or a horse-race model would be a better fit for data showing that reaction times are facilitated to a greater degree than would be expected when a startling stimulus presented after the typical “go” signal. Abstract: When a startling acoustic…

Continue reading

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…

Continue reading

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…

Continue reading