Oscillatory Tdcs
Oscillatory Tdcs - Related Videos
11:26
Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
0 Views •
Cited by 7 •
2014
Cerebral perfusion is maintained across a range of pressures via cerebral autoregulation. However, characterizing autoregulation requires prominent pressure fluctuations at regulated frequencies. The described protocol will show how oscillatory lower body negative pressure can generate pressure fluctuations to provide data for projection pursuit regression for quantification of the autoregulatory curve.
08:18
A Protocol for the Use of Remotely-Supervised Transcranial Direct Current Stimulation (tDCS) in Multiple Sclerosis (MS)
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Cited by 51 •
2015
The goal of this pilot study is to describe a protocol for the remotely-supervised delivery of transcranial direct current stimulation (tDCS) so that the procedure maintains standards of in-clinic practice, including safety, reproducibility, and tolerability. The feasibility of this protocol was tested in participants with multiple sclerosis (MS).
15:05
Technique and Considerations in the Use of 4x1 Ring High-definition Transcranial Direct Current Stimulation (HD-tDCS)
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Cited by 265 •
2013
High-definition transcranial direct current stimulation (HD-tDCS), with its 4x1-ring montage, is a noninvasive brain stimulation technique that combines both the neuromodulatory effects of conventional tDCS with increased focality. This article provides a systematic demonstration of the use of 4x1 HD-tDCS, and the considerations needed for safe and effective stimulation.
11:54
Transcranial Direct Current Stimulation (tDCS) in Mice
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Cited by 12 •
2018
Transcranial direct current stimulation (tDCS) is a therapeutic technique proposed to treat psychiatric diseases. An animal model is essential for understanding the specific biological alterations evoked by tDCS. This protocol describes a tDCS mouse model that uses a chronically implanted electrode.
07:56
Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
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Cited by 11 •
2017
The goal of the protocol is to create liquid crystalline polymer films that can mechanically oscillate under continuous light irradiation. We describe in great detail the conception of free-standing films, from the liquid crystal alignment method to the photo-actuation. The experimental protocol applied to prepare this material is broadly applicable.
FAQs
Stimulation frequency determines which temporal pattern the applied current introduces, making it central to experiments on brain rhythms. Researchers can vary frequency to examine whether neural activity or behavior changes when stimulation is delivered at different rhythms. This design helps test links between oscillatory timing, cortical excitability, perception, learning, and behavior.
The phase relationship between the applied waveform and ongoing brain activity is important because oscillatory tDCS can synchronize activity with existing neural oscillations. This makes the technique useful for asking whether timing, rather than only overall electrical exposure, influences cortical processing. Researchers can interpret changes in relation to coordination between the stimulation rhythm and brain dynamics.
Changes in neuronal membrane potential provide a physiological route by which the stimulation can alter cortical excitability. When these shifts occur rhythmically, they may also contribute to changes in synaptic plasticity, the capacity of neural connections to change. Studying both effects allows neuroscience experiments to connect immediate excitability changes with longer-lasting learning-related outcomes.
An experimental protocol should specify stimulation intensity, frequency, electrode placement, and waveform shape, because each can influence physiological effects. These variables also determine how well the stimulation addresses a question about cortical excitability, synchronization, or plasticity. Keeping them explicit allows researchers to compare conditions and relate observed behavioral or neural outcomes to the stimulation design.
A basic study design begins by applying the selected weak, periodically varying current through scalp electrodes while defining the stimulation frequency, intensity, placement, and waveform. Researchers then examine the resulting neural or behavioral effects in relation to the experimental question. This parameter-based workflow supports controlled tests of how changing stimulation conditions influences brain activity.
Neuroscientists use oscillatory tDCS to investigate relationships between brain rhythms, perception, learning, and behavior. The method also supports research into dysfunctional network activity by providing a way to modulate neural dynamics noninvasively. These applications make it useful for examining how changes in rhythmic neural activity relate to cognitive functions and abnormal network behavior.
Outcomes may include altered cortical excitability, changes in synchronization with ongoing brain oscillations, or effects on synaptic plasticity. At the behavioral level, studies may examine perception, learning, and behavior. Interpretation requires connecting those outcomes to stimulation frequency, intensity, electrode placement, and waveform shape rather than treating the technique as having a single fixed effect.