PMID- 26321925 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150831 LR - 20201001 IS - 1662-5137 (Print) IS - 1662-5137 (Electronic) IS - 1662-5137 (Linking) VI - 9 DP - 2015 TI - Bidirectional interactions between neuronal and hemodynamic responses to transcranial direct current stimulation (tDCS): challenges for brain-state dependent tDCS. PG - 107 LID - 10.3389/fnsys.2015.00107 [doi] LID - 107 AB - Transcranial direct current stimulation (tDCS) has been shown to modulate cortical neural activity. During neural activity, the electric currents from excitable membranes of brain tissue superimpose in the extracellular medium and generate a potential at scalp, which is referred as the electroencephalogram (EEG). Respective neural activity (energy demand) has been shown to be closely related, spatially and temporally, to cerebral blood flow (CBF) that supplies glucose (energy supply) via neurovascular coupling. The hemodynamic response can be captured by near-infrared spectroscopy (NIRS), which enables continuous monitoring of cerebral oxygenation and blood volume. This neurovascular coupling phenomenon led to the concept of neurovascular unit (NVU) that consists of the endothelium, glia, neurons, pericytes, and the basal lamina. Here, recent works suggest NVU as an integrated system working in concert using feedback mechanisms to enable proper brain homeostasis and function where the challenge remains in capturing these mostly nonlinear spatiotemporal interactions within NVU for brain-state dependent tDCS. In principal accordance, we propose EEG-NIRS-based whole-head monitoring of tDCS-induced neuronal and hemodynamic alterations during tDCS. FAU - Dutta, Anirban AU - Dutta A AD - INRIA (Sophia Antipolis) - CNRS: UMR5506 - Universite Montpellier Montpellier, France ; Laboratoire d'Informatique de Robotique et de Microelectronique de Montpellier (LIRMM), CNRS: UMR5506 - Universite Montpellier Montpellier, France. LA - eng PT - Journal Article DEP - 20150810 PL - Switzerland TA - Front Syst Neurosci JT - Frontiers in systems neuroscience JID - 101477946 PMC - PMC4530593 OTO - NOTNLM OT - electroencephalogram OT - hemo-neural hypothesis OT - near-infrared spectroscopy OT - neurovascular coupling OT - transcranial direct current stimulation EDAT- 2015/09/01 06:00 MHDA- 2015/09/01 06:01 PMCR- 2015/01/01 CRDT- 2015/09/01 06:00 PHST- 2015/04/02 00:00 [received] PHST- 2015/07/13 00:00 [accepted] PHST- 2015/09/01 06:00 [entrez] PHST- 2015/09/01 06:00 [pubmed] PHST- 2015/09/01 06:01 [medline] PHST- 2015/01/01 00:00 [pmc-release] AID - 10.3389/fnsys.2015.00107 [doi] PST - epublish SO - Front Syst Neurosci. 2015 Aug 10;9:107. doi: 10.3389/fnsys.2015.00107. eCollection 2015.