Corticospinal excitability changes to anodal tDCS elucidated with NIRS-EEG joint-imaging: An ischemic stroke study
| Autor: | Mehak Sood, Abhijit Das, Anirban Dutta, Utkarsh Jindal, Daniel Kondziella, Shubhajit Roy Chowdhury |
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| Rok vydání: | 2015 |
| Předmět: |
Male
Anodal tdcs Spectroscopy Near-Infrared medicine.diagnostic_test Transcranial direct-current stimulation medicine.medical_treatment Stroke Rehabilitation Electroencephalography Models Theoretical Evoked Potentials Motor Transcranial Direct Current Stimulation Brain Ischemia Neuroimaging Ischemic stroke Image Processing Computer-Assisted Joint imaging medicine Humans Female Psychology Electrodes Neuroscience Neurorehabilitation Aged |
| Zdroj: | EMBC |
| DOI: | 10.1109/embc.2015.7319122 |
| Popis: | Transcranial direct current stimulation (tDCS) has been shown to modulate corticospinal excitability. We used near-infrared spectroscopy (NIRS) - electroencephalography (EEG) joint-imaging during and after anodal tDCS to measure changes in mean cerebral haemoglobin oxygen saturation (rSO2) along with changes in the log-transformed mean-power of EEG within 0.5 Hz – 11.25 Hz. In two separate studies, we investigated local post-tDCS alterations from baseline at the site of anodal tDCS using NIRS-EEG/tDCS joint-imaging as well as local post-tDCS alterations in motor evoked potentials (MEP)-measure of corticospinal excitability. In the first study, we found that post-tDCS changes in the mean rSO2 from baseline mostly correlated with the corresponding post-tDCS change in log-transformed mean-power of EEG within 0.5 Hz – 11.25 Hz. Moreover, a decrease in log-transformed mean-power of EEG within 0.5 Hz – 11.25 Hz corresponded with an increase in the MEP-measure of corticospinal excitability - found in the second study. Therefore, we propose to combine NIRS-EEG/tDCS joint-imaging with corticospinal excitability investigation in a single study to confirm these finding. Furthermore, we postulate that the innovative technologies for portable NIRS-EEG neuroimaging may be leveraged to objectively quantify the progress (e.g., corticospinal excitability alterations) and dose tDCS intervention as an adjuvant treatment during neurorehabilitation. |
| Databáze: | OpenAIRE |
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