Frontal Midline Theta Oscillations during Mental Arithmetic: Effects of Stress

Complex cognitive tasks such as mental arithmetic heavily rely on intact, well-coordinated prefrontal cortex (PFC) function. Converging evidence suggests that frontal midline theta (FMT) oscillations play an important role during the execution of such PFC-dependent tasks. Additionally, it is well-es...

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Main Authors: Matti eGärtner, Simone eGrimm, Malek eBajbouj
Format: Article
Language:English
Published: Frontiers Media S.A. 2015-04-01
Series:Frontiers in Behavioral Neuroscience
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fnbeh.2015.00096/full
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author Matti eGärtner
Matti eGärtner
Simone eGrimm
Simone eGrimm
Simone eGrimm
Malek eBajbouj
author_facet Matti eGärtner
Matti eGärtner
Simone eGrimm
Simone eGrimm
Simone eGrimm
Malek eBajbouj
author_sort Matti eGärtner
collection DOAJ
description Complex cognitive tasks such as mental arithmetic heavily rely on intact, well-coordinated prefrontal cortex (PFC) function. Converging evidence suggests that frontal midline theta (FMT) oscillations play an important role during the execution of such PFC-dependent tasks. Additionally, it is well-established that acute stress impairs PFC function, and recent evidence suggests that FMT is decreased under stress. In this EEG study, we investigated FMT oscillations during a mental arithmetic task that was carried out in a stressful and a neutral control condition. Our results show late-onset, sustained FMT increases during mental arithmetic. In the neutral condition FMT started to increase earlier than in the stress condition. Direct comparison of the conditions quantified this difference by showing stronger FMT increases in the neutral condition in an early time window. Between-subject correlation analysis showed that attenuated FMT under stress was related to slowed reaction times. Our results suggest that FMT is associated with stimulus independent mental processes during the natural and complex PFC-dependent task of mental arithmetic, and is a possible marker for intact PFC function that is disrupted under stress.
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spelling doaj.art-9ae245d8b53340e8bd246eafe4eab70b2022-12-22T00:01:41ZengFrontiers Media S.A.Frontiers in Behavioral Neuroscience1662-51532015-04-01910.3389/fnbeh.2015.00096133588Frontal Midline Theta Oscillations during Mental Arithmetic: Effects of StressMatti eGärtner0Matti eGärtner1Simone eGrimm2Simone eGrimm3Simone eGrimm4Malek eBajbouj5Freie Universität BerlinCharitéFreie Universität BerlinCharitéUniversity of ZürichCharitéComplex cognitive tasks such as mental arithmetic heavily rely on intact, well-coordinated prefrontal cortex (PFC) function. Converging evidence suggests that frontal midline theta (FMT) oscillations play an important role during the execution of such PFC-dependent tasks. Additionally, it is well-established that acute stress impairs PFC function, and recent evidence suggests that FMT is decreased under stress. In this EEG study, we investigated FMT oscillations during a mental arithmetic task that was carried out in a stressful and a neutral control condition. Our results show late-onset, sustained FMT increases during mental arithmetic. In the neutral condition FMT started to increase earlier than in the stress condition. Direct comparison of the conditions quantified this difference by showing stronger FMT increases in the neutral condition in an early time window. Between-subject correlation analysis showed that attenuated FMT under stress was related to slowed reaction times. Our results suggest that FMT is associated with stimulus independent mental processes during the natural and complex PFC-dependent task of mental arithmetic, and is a possible marker for intact PFC function that is disrupted under stress.http://journal.frontiersin.org/Journal/10.3389/fnbeh.2015.00096/fullEEGMental arithmeticacute stressprefrontal cortex (PFC)frontal midline theta
spellingShingle Matti eGärtner
Matti eGärtner
Simone eGrimm
Simone eGrimm
Simone eGrimm
Malek eBajbouj
Frontal Midline Theta Oscillations during Mental Arithmetic: Effects of Stress
Frontiers in Behavioral Neuroscience
EEG
Mental arithmetic
acute stress
prefrontal cortex (PFC)
frontal midline theta
title Frontal Midline Theta Oscillations during Mental Arithmetic: Effects of Stress
title_full Frontal Midline Theta Oscillations during Mental Arithmetic: Effects of Stress
title_fullStr Frontal Midline Theta Oscillations during Mental Arithmetic: Effects of Stress
title_full_unstemmed Frontal Midline Theta Oscillations during Mental Arithmetic: Effects of Stress
title_short Frontal Midline Theta Oscillations during Mental Arithmetic: Effects of Stress
title_sort frontal midline theta oscillations during mental arithmetic effects of stress
topic EEG
Mental arithmetic
acute stress
prefrontal cortex (PFC)
frontal midline theta
url http://journal.frontiersin.org/Journal/10.3389/fnbeh.2015.00096/full
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