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Low-resolution electromagnetic tomography neurofeedback

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Check out this Knowledge Base article from StressTherapy Solutions: Low-resolution electromagnetic tomography neurofeedback.

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Study at a glance

Area
QEEG, Methods & Mechanisms
Study type
Pilot / open study
Authors
Congedo M, Lubar JF, Joffe D
Journal
IEEE Transactions on Neural Systems and Rehabilitation Engineering
Year
2004
Participants
6 undergraduate students (3 men, 3 women)
Population
Adults
Protocol
LORETA neurofeedback (beta/alpha ratio, anterior cingulate)

Key findings

  • The beta/alpha current density ratio in the anterior cingulate increased over training sessions
  • By the end of training, participants could increase the ratio voluntarily
  • Described as the first application of an EEG inverse solution to neurofeedback
  • The authors suggest uses such as targeting epileptic foci, region-specific rehabilitation after traumatic brain injury, and brain-computer interfaces

DOI 10.1109/tnsre.2004.840492 → PubMed 15614994 →

This study introduced neurofeedback based on low-resolution electromagnetic tomography (LORETA), which estimates electrical current inside the brain rather than relying on one or a few scalp electrodes. Six undergraduates trained with a 19-electrode setup to raise the ratio of beta (16-20 Hz) to alpha (8-10 Hz) current density in the cognitive division of the anterior cingulate, with the aim of improving sustained attention. The authors report that the ratio rose across sessions and that participants learned to increase it at will.