Transcranial Alternating Current Stimulation (tACS) as a Tool to Modulate P300 Amplitude in Attention Deficit Hyperactivity Disorder (ADHD): Preliminary Findings

0522197 - ÚI 2021 RIV NL eng J - Journal Article
Dallmer-Zerbe, Isa - Popp, F. - Lam, A. P. - Philipsen, A. - Herrmann, C. S.
Transcranial Alternating Current Stimulation (tACS) as a Tool to Modulate P300 Amplitude in Attention Deficit Hyperactivity Disorder (ADHD): Preliminary Findings.
Brain Topography. Roč. 33, č. 2 (2020), s. 191-207. ISSN 0896-0267. E-ISSN 1573-6792
Institutional support: RVO:67985807
Keywords : Attention defcit/hyperactivity disorder * Transcranial alternating current stimulation
OECD category: Psychology, special (including therapy for learning, speech, hearing, visual and other physical and mental disabilities)
Impact factor: 3.020, year: 2020
Method of publishing: Open access

Studies examining event-related potentials (ERP) in patients affected by attention deficit/hyperactivity disorder (ADHD) have found considerable evidence of reduced target P300 amplitude across different perceptual modalities. P300 amplitude has been related to attention-driven context comparison and resource allocation processes. Altered P300 amplitude in ADHD can be reasonably assumed to be related to ADHD typical cognitive performance deficits. Transcranial alternating current stimulation (tACS) can increase the amplitude of endogenous brain oscillations. Because ERP components can be viewed as event-related oscillations (EROs), with P300 translating into the delta (0–4 Hz) and theta (4–8 Hz) frequency range, an increase of delta and theta ERO amplitudes by tACS should result in an increase of P300 amplitudes in ADHD patients. In this pilot study, 18 adult ADHD patients (7 female) performed three consecutive blocks of a visual oddball task while the electroencephalogram (EEG) was recorded. Patients received either 20 min of tACS or sham stimulation at a stimulation intensity of 1 mA. Individual stimulation frequency was determined using a time–frequency decomposition of the P300. Our preliminary results demonstrate a significant increase in P300 amplitude in the stimulation group which was accompanied by a decrease in omission errors pre-to-post tACS. However, studies including larger sample sizes are advised.
Permanent Link: http://hdl.handle.net/11104/0306695