Investigating Different Frequencies of Transcranial Electrical Stimulations in Dementia Population

Dementia is a prevalent condition with no known cure. It affects not only the person with dementia but also the family. This study will investigate the effects of applying different transcranial electrical stimulation (tES) waveforms to find the optimal stimulation when paired with cognitive exercise on older adults with dementia. It is a placebo-controlled double-blind study with statistical rigor. In addition, the investigators will investigate technological methods to monitor changes due to the intervention. These include functional near infrared spectroscopy (fNIRS), electroencephalography (EEG), electrovestibulography (EVestG), and balance measurements using accelerometers. fNIRS measures oxygenated and deoxygenated blood flow to the brain and it may help to understand neuronal changes due to intervention. EEG measures the electrical activity of the brain via electrodes placed on the scalp to study the brain's response to different electrical stimulations treatments. EVestG is a non-invasive measure of the vestibuloacoustic system in both background (no motion) and in response to passive whole-body tilt stimuli. We hypothesize there is a direct link between vestibular system deficiencies and Alzheimer's. Lastly, the investigators will measure the effects of electrical stimulation on balance by measuring postural sway using two accelerometers. This study investigates the effects of transcranial alternating current stimulation (tACS) and transcranial direct current stimul…

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Shelly Rempel-Rossum  ·  204-789-3389  ·  Shelly.rempelrossum@umanitoba.ca

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