The neurology of sleep

Beran, Roy G.

doi:10.1016/b978-0-7295-4080-3.00012-x

Cited by 1 publication

(1 citation statement)

References 12 publications

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“…High level of beta power can be observed in anxiety states (Beran, 2012), after intake of drugs such as benzodiazepines or barbiturates (Blume, 2006), after alcohol intake and is also common in children suffering from hyperactivity (Clarke et al, 2013). Recently, an excess of beta activity has also been observed in case of conduct disorder and psychopathic traits (Calzada-Reyes et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

A Pilot Study on the Effects of Transcranial Direct Current Stimulation on Brain Rhythms and Entropy during Self-Paced Finger Movement using the Epoc Helmet

Bodranghien

Mahe

Clément

et al. 2017

Front. Hum. Neurosci.

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Transcranial direct current stimulation (tDCS) of the cerebellum is emerging as a novel non-invasive tool to modulate the activity of the cerebellar circuitry. In a single blinded study, we applied anodal tDCS (atDCS) of the cerebellum to assess its effects on brain entropy and brain rhythms during self-paced sequential finger movements in a group of healthy volunteers. Although wearable electroencephalogram (EEG) systems cannot compete with traditional clinical/laboratory set-ups in terms of accuracy and channel density, they have now reached a sufficient maturity to envision daily life applications. Therefore, the EEG was recorded with a comfortable and easy to wear 14 channels wireless helmet (Epoc headset; electrode location was based on the 10–20 system). Cerebellar neurostimulation modified brain rhythmicity with a decrease in the delta band (electrode F3 and T8, p < 0.05). By contrast, our study did not show any significant change in entropy ratios and laterality coefficients (LC) after atDCS of the cerebellum in the 14 channels. The cerebellum is heavily connected with the cerebral cortex including the frontal lobes and parietal lobes via the cerebello-thalamo-cortical pathway. We propose that the effects of anodal stimulation of the cerebellar cortex upon cerebral cortical rhythms are mediated by this key-pathway. Additional studies using high-density EEG recordings and behavioral correlates are now required to confirm our findings, especially given the limited coverage of Epoc headset.

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