Changes in Quantitative EEG and Low Resolution Tomography Following Cranial Electrotherapy Stimulation. Metadata

Metadata describes a digital item, providing (if known) such information as creator, publisher, contents, size, relationship to other resources, and more. Metadata may also contain "preservation" components that help us to maintain the integrity of digital files over time.

Title

  • Main Title Changes in Quantitative EEG and Low Resolution Tomography Following Cranial Electrotherapy Stimulation.

Creator

  • Author: Kennerly, Richard C.
    Creator Type: Personal

Contributor

  • Chair: Bodenhamer-Davis, Eugenia
    Contributor Type: Personal
    Contributor Info: Major Professor
  • Committee Member: McGill, Jerry
    Contributor Type: Personal
  • Committee Member: Holden, Janice Miner
    Contributor Type: Personal
  • Committee Member: Miller, Daniel
    Contributor Type: Personal

Publisher

  • Name: University of North Texas
    Place of Publication: Denton, Texas

Date

  • Creation: 2006-08
  • Digitized: 2008-04-02

Language

  • English

Description

  • Content Description: The effects of cranial electrotherapy stimulation (CES) on human EEG and brain current density were evaluated by quantitative electroencephalography (qEEG) and low resolution brain electromagnetic tomography (LORETA). A total of 72 research subjects were provided with a single session of CES, 38 were provided with 0.5 Hz CES while 34 were provided with 100 Hz CES. The qEEG paired t-tests revealed that in both frequencies of CES there was a significant (.05) increase in alpha relative power with concomitant decreases in delta and beta relative power. The 0.5 Hz CES decreased a wider frequency range of delta activity, while the 100 Hz CES decreased a wider frequency range of beta activity; suggesting some difference may exist in the EEG response to different frequencies of CES. The changes found in qEEG relative power were consistent with the affective and cognitive effects of CES reported in the literature, such as increased relaxation and decreased anxiety. Statistically significant changes for qEEG values other than relative power, such as coherence, amplitude asymmetry, phase lag and power ratios were also found. The LORETA paired t-tests found statistically significant (.05) increases in cortical and subcortical theta and alpha frequency current density with concomitant decreases in delta and beta current density. The effects of CES on current density varied by frequency, but did not show a differential in response based on proximity to the contacts, or structures within the brain. Statistically significant changes in current density were found in all 2394 gray matter voxels represented by LORETA, indicating a whole brain response to the CES stimulus. The qEEG and LORETA findings revealed that a single 20-minute session of CES does have a significant effect on the cortical and subcortical activity of the human brain resulting in activity consistent with decreased anxiety and increased relaxation.

Subject

  • Library of Congress Subject Headings: Electroencephalography.
  • Library of Congress Subject Headings: Tomography.
  • Library of Congress Subject Headings: Electric stimulation.
  • Keyword: cranial electrotherapy stimulation (CES)
  • Keyword: Alpha-Stim
  • Keyword: transcranial direct current stimulation (tDCS)
  • Keyword: LORETA
  • Keyword: qEEG

Collection

  • Name: UNT Theses and Dissertations
    Code: UNTETD

Institution

  • Name: UNT Libraries
    Code: UNT

Rights

  • Rights Access: public
  • Rights License: copyright
  • Rights Holder: Kennerly, Richard C.
  • Rights Statement: Copyright is held by the author, unless otherwise noted. All rights reserved.

Resource Type

  • Thesis or Dissertation

Format

  • Text

Identifier

  • OCLC: 123753901
  • Archival Resource Key: ark:/67531/metadc5364

Degree

  • Degree Name: Doctor of Philosophy
  • Degree Level: Doctoral
  • Degree Discipline: Health Psychology and Behavioral Medicine
  • Academic Department: Department of Psychology
  • Degree Grantor: University of North Texas

Note

Back to Top of Screen