Task-related modulation of anterior theta and posterior alpha EEG reflects top-down preparation

Byoung-Kyong Min, Hae Jeong Park

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Background: Prestimulus EEG alpha activity in humans has been considered to reflect ongoing top-down preparation for the performance of subsequent tasks. Since theta oscillations may be related to poststimulus top-down processing, we investigated whether prestimulus EEG theta activity also reflects top-down cognitive preparation for a stimulus.Results: We recorded EEG data from 15 healthy controls performing a color and shape discrimination task, and used the wavelet transformation to investigate the time course and power of oscillatory activity in the signals. We observed a relationship between both anterior theta and posterior alpha power in the prestimulus period and the type of subsequent task.Conclusions: Since task-differences were reflected in both theta and alpha activities prior to stimulus onset, both prestimulus theta (particularly around the anterior region) and prestimulus alpha (particularly around the posterior region) activities may reflect prestimulus top-down preparation for the performance of subsequent tasks.

Original languageEnglish
Article number79
JournalBMC Neuroscience
Volume11
DOIs
Publication statusPublished - 2010 Jun 28
Externally publishedYes

Fingerprint

Electroencephalography
Task Performance and Analysis
Human Activities
Color
Power (Psychology)

ASJC Scopus subject areas

  • Neuroscience(all)
  • Cellular and Molecular Neuroscience

Cite this

Task-related modulation of anterior theta and posterior alpha EEG reflects top-down preparation. / Min, Byoung-Kyong; Park, Hae Jeong.

In: BMC Neuroscience, Vol. 11, 79, 28.06.2010.

Research output: Contribution to journalArticle

@article{03055ba22fa14cbdb32faa592f3e238e,
title = "Task-related modulation of anterior theta and posterior alpha EEG reflects top-down preparation",
abstract = "Background: Prestimulus EEG alpha activity in humans has been considered to reflect ongoing top-down preparation for the performance of subsequent tasks. Since theta oscillations may be related to poststimulus top-down processing, we investigated whether prestimulus EEG theta activity also reflects top-down cognitive preparation for a stimulus.Results: We recorded EEG data from 15 healthy controls performing a color and shape discrimination task, and used the wavelet transformation to investigate the time course and power of oscillatory activity in the signals. We observed a relationship between both anterior theta and posterior alpha power in the prestimulus period and the type of subsequent task.Conclusions: Since task-differences were reflected in both theta and alpha activities prior to stimulus onset, both prestimulus theta (particularly around the anterior region) and prestimulus alpha (particularly around the posterior region) activities may reflect prestimulus top-down preparation for the performance of subsequent tasks.",
author = "Byoung-Kyong Min and Park, {Hae Jeong}",
year = "2010",
month = "6",
day = "28",
doi = "10.1186/1471-2202-11-79",
language = "English",
volume = "11",
journal = "BMC Neuroscience",
issn = "1471-2202",
publisher = "BioMed Central",

}

TY - JOUR

T1 - Task-related modulation of anterior theta and posterior alpha EEG reflects top-down preparation

AU - Min, Byoung-Kyong

AU - Park, Hae Jeong

PY - 2010/6/28

Y1 - 2010/6/28

N2 - Background: Prestimulus EEG alpha activity in humans has been considered to reflect ongoing top-down preparation for the performance of subsequent tasks. Since theta oscillations may be related to poststimulus top-down processing, we investigated whether prestimulus EEG theta activity also reflects top-down cognitive preparation for a stimulus.Results: We recorded EEG data from 15 healthy controls performing a color and shape discrimination task, and used the wavelet transformation to investigate the time course and power of oscillatory activity in the signals. We observed a relationship between both anterior theta and posterior alpha power in the prestimulus period and the type of subsequent task.Conclusions: Since task-differences were reflected in both theta and alpha activities prior to stimulus onset, both prestimulus theta (particularly around the anterior region) and prestimulus alpha (particularly around the posterior region) activities may reflect prestimulus top-down preparation for the performance of subsequent tasks.

AB - Background: Prestimulus EEG alpha activity in humans has been considered to reflect ongoing top-down preparation for the performance of subsequent tasks. Since theta oscillations may be related to poststimulus top-down processing, we investigated whether prestimulus EEG theta activity also reflects top-down cognitive preparation for a stimulus.Results: We recorded EEG data from 15 healthy controls performing a color and shape discrimination task, and used the wavelet transformation to investigate the time course and power of oscillatory activity in the signals. We observed a relationship between both anterior theta and posterior alpha power in the prestimulus period and the type of subsequent task.Conclusions: Since task-differences were reflected in both theta and alpha activities prior to stimulus onset, both prestimulus theta (particularly around the anterior region) and prestimulus alpha (particularly around the posterior region) activities may reflect prestimulus top-down preparation for the performance of subsequent tasks.

UR - http://www.scopus.com/inward/record.url?scp=77953934210&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953934210&partnerID=8YFLogxK

U2 - 10.1186/1471-2202-11-79

DO - 10.1186/1471-2202-11-79

M3 - Article

VL - 11

JO - BMC Neuroscience

JF - BMC Neuroscience

SN - 1471-2202

M1 - 79

ER -