Effect of tACS on persistent delusions in schizophrenia.

Link – Effect of add-on transcranial alternating current stimulation (tACS) on persistent delusions in schizophrenia. Abstract The utility of non-invasive brain stimulation techniques to alleviate resistant delusions in schizophrenia is an under-researched area. In this study, we report the effectiveness of alpha transcranial alternating current stimulation (tACS) targeting the medial prefrontal cortex in ameliorating persistent […]

Targeting Gamma-Related Pathophysiology

Link – Targeting Gamma-Related Pathophysiology in Autism Spectrum Disorder Using Transcranial Electrical Stimulation: Opportunities and Challenges. Abstract A range of scalp electroencephalogram (EEG) abnormalities correlates with the core symptoms of autism spectrum disorder (ASD). Among these are alterations of brain oscillations in the gamma-frequency EEG band in adults and children with ASD, whose origin has […]

Modulation of auditory gamma-band responses using tES

Link – Modulation of auditory gamma-band responses using transcranial electrical stimulation. Abstract Auditory gamma-band (>30 Hz) activity is a biomarker of cortical excitation/inhibition (E/I) balance in autism, schizophrenia, and bipolar disorder. We provide a comprehensive account of the effects of transcranial alternating current stimulation (tACS) and transcranial direct current stimulation (tDCS) on gamma responses. Forty-five […]

Conscious perception of flickering stimuli SSR

Link – Conscious perception of flickering stimuli in binocular rivalry and continuous flash suppression is not affected by tACS-induced SSR modulation. Conscious Cogn. 2020 May 22;82:102953 Authors: Schauer G, Ogawa CY, Tsuchiya N, Bartels A Abstract The content of conscious perception is known to correlate with steady-state responses (SSRs), yet their causal relationship remains unclear. […]

Enhancing gamma oscillations in Parkinsons

Link – Enhancing gamma oscillations restores primary motor cortex plasticity in Parkinson’s disease. Abstract In humans, gamma (γ) oscillations in cortical motor areas reflect asynchronous synaptic activity and contribute to plasticity processes. In Parkinson’s disease (PD), γ oscillatory activity in the basal ganglia-thalamo-cortical network is altered and the long-term potentiation (LTP)-like plasticity elicited by intermittent […]

Biasing the Perception of Speech with tACS

Link – Biasing the Perception of Spoken Words with Transcranial Alternating Current Stimulation. Abstract Recent neuroimaging evidence suggests that the frequency of entrained oscillations in auditory cortices influences the perceived duration of speech segments, impacting word perception [Kösem, A., Bosker, H. R., Takashima, A., Meyer, A., Jensen, O., & Hagoort, P. Neural entrainment determines the […]

Effects on motor learning of tACS

Link – Effects on motor learning of transcranial alternating current stimulation applied over the primary motor cortex and cerebellar hemisphere. Abstract Transcranial alternating current stimulation (tACS) is a non-invasive method of brain stimulation that modulates oscillatory neural activity in the cortical area under the electrodes. Gamma (γ)-tACS applied over the primary motor cortex (M1) and […]

Causal links between parietal alpha activity and spatial auditory attention.

Link – Causal links between parietal alpha activity and spatial auditory attention. Abstract Both visual and auditory spatial selective attention result in lateralized alpha (8-14 Hz) oscillatory power in parietal cortex: alpha increases in the hemisphere ipsilateral to attentional focus. Brain stimulation studies suggest a causal relationship between parietal alpha and suppression of the representation […]

Detecting cortical circuits resonant to high-frequency oscillations

Link – Detecting cortical circuits resonant to high-frequency oscillations in the human primary motor cortex: a TMS-tACS study. Abstract Corticospinal volleys evoked by transcranial magnetic stimulation (TMS) over the primary motor cortex (M1) consist of high-frequency bursts (≈667 and ≈333 Hz). However, intracortical circuits producing such corticospinal high-frequency bursts are unknown. We here investigated whether neurons […]

Intermittent tACS during a visual task impacts neural oscillations

Link – ntermittent tACS during a visual task impacts neural oscillations and LZW complexity. Abstract Little is known about how transcranial alternating current stimulation (tACS) interacts with brain activity. Here, we investigate the effects of tACS using an intermittent tACS-EEG protocol and use, in addition to classical metrics, Lempel-Ziv-Welch complexity (LZW) to characterize the interactions […]