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Application of Repetitive Visual Stimulation to EEG Neurofeedback Protocols

STS Instructor Authored by Thomas Collura

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Check out this Knowledge Base article from StressTherapy Solutions: Application of Repetitive Visual Stimulation to EEG Neurofeedback Protocols.

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Study at a glance

Area
QEEG, Methods & Mechanisms
Study type
Pilot / open study
Authors
Collura TF
Journal
Journal of Neurotherapy
Year
2002
Protocol
steady-state visual evoked potentials with synchronous comb filtering

Key findings

  • Real-time SSVEP tracking agreed with traditional averaged evoked-potential traces
  • The response to repeated flashes can be explained as overlapping single evoked responses, without needing an entrainment model
  • Short-term changes in response size tracked attentional state
  • Pilot data only; presented as a basis for developing new feedback methods

DOI 10.1300/j184v06n02_07 →

This report proposes using the brain's response to a flickering light as a signal for neurofeedback. It treats the steady rhythmic response (the steady-state visual evoked potential, SSVEP) as a chain of individual evoked responses, and uses a synchronous comb filter to track it in real time. Pilot recordings show that the real-time signal matches conventionally averaged evoked potentials and fluctuates from moment to moment with attention.