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Related Concept Videos

Frequency-Domain Interpretation of PD Control01:24

Frequency-Domain Interpretation of PD Control

Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
The proportional control gain, combined with the system's...

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Brief protocol to improve ataxia symptoms via cerebello-spinal direct current stimulation during gait training.

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Immediate Effect of Photobiomodulation Associated with the Voiced Tongue Trill Technique on Amateur Singers' Voices: A Triple-Blind Randomized Clinical Trial.

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Remotely Supervised Transcranial Direct Current Stimulation: An Update on Safety and Tolerability
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Transcranial Direct Current Stimulation in Voice and Speech Control: Scoping Review.

Tatiane Lopes Nascimento da Silva1, Kelly Sukar Cavalcanti Oliveira2, Déborah Laís Dos Santos Carneiro1

  • 1Department of Speech-Language Pathology and Audiology, Health Sciences Center, Universidade Federal de Pernambuco, Av. Prof. Artur de Sá, s/n, Cidade Universitária, Recife 50670-420, Pernambuco, Brazil.

Journal of Voice : Official Journal of the Voice Foundation
|November 15, 2025
PubMed
Summary

Transcranial direct current stimulation (tDCS) can improve voice and speech performance. Anodal tDCS enhances motor adaptation to sensory changes, showing potential for clinical voice therapy.

Keywords:
SingingSpeechTranscranial direct current stimulationVoiceVoice quality

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Area of Science:

  • Neuroscience
  • Speech and Hearing Sciences
  • Rehabilitation Medicine

Background:

  • Voice and speech disorders affect millions globally.
  • Non-invasive brain stimulation techniques offer novel therapeutic avenues.
  • Transcranial direct current stimulation (tDCS) is emerging as a tool for modulating neural activity.

Purpose of the Study:

  • To map brain areas stimulated by tDCS for voice and speech modulation.
  • To summarize evidence on tDCS effects on vocal quality and parameters.
  • To correlate tDCS outcomes with stimulated brain regions.

Main Methods:

  • Systematic literature review of PubMed, Web of Science, and VHL databases.
  • Search terms included "Transcranial direct current stimulation" AND "Voice quality OR singing OR speech OR voice".
  • PCC framework used: Population (individuals undergoing tDCS for voice/speech), Concept (brain areas, stimulation type), Context (effects on voice/speech).

Main Results:

  • Eight studies were included from an initial 919.
  • Dorsolateral prefrontal cortex and left ventral motor cortex showed effects on vocal production and motor control.
  • tDCS over the inferior parietal lobe modulated speech motor learning and vocal adaptation.

Conclusions:

  • Anodal tDCS demonstrated improved motor adaptation to sensory alterations.
  • tDCS shows potential as a therapeutic intervention for voice and speech enhancement.
  • Further research is warranted to optimize tDCS protocols for clinical application.