Mild non-invasive brain stimulation for apathy in Huntington's disease

<p>Randomized and counterbalanced sequence of three sessions of transcranial alternating current stimulation (tACS) conducted at least 72 hours apart, with details as follows:<br> 1) 20 minutes and 2mA at the participants peak individualised alpha frequency;<br> 2) 20 minutes and 2mA at 2Hz (delta frequency);<br> 3) 20 minutes of sham (placebo) with 30 seconds 'fade in' followed by an immediate 30 seconds 'fade out'.<br> TACS is administered using a Startstim wireless hybrid electroencephalography(EEG)/transcranial current stimulation 8-channel system (Neuroelectrics, Spain).<br> EEG obtained via a 50-channel Neuroscan EEG system.<br> All data collection (baseline measures, resting and task-related EEG) and tACS administration is conducted by Marie-Claire Davis (Registered Psychologist with practice endorsement in Clinical Neuropsychology and PhD candidate). </p>