Human cortical circuits for central executive function emerge by theta phase synchronization

Mizuhara, Hiroaki; Yamaguchi, Yoko

doi:10.1016/j.neuroimage.2007.02.026

Cited by 155 publications

(116 citation statements)

References 58 publications

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“…40 Although theta has been most closely associated with cingulate activation in cognitive control-demanding tasks, it has also been associated with lateral prefrontal cortex activation during a cognitive task. 48 Although we did not see a difference in theta in the midline scalp contacts, the disruption noted in theta within right frontal contacts supports the finding that RECN is disrupted in unresponsive patients.…”

Section: Discussionsupporting

confidence: 79%

Frontal Networks Associated With Command Following After Hemorrhagic Stroke

Mikell

Banks

Frey

et al. 2015

Stroke

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Background and Purpose-Level of consciousness is frequently assessed by command-following ability in the clinical setting. However, it is unclear what brain circuits are needed to follow commands. We sought to determine what networks differentiate command following from noncommand following patients after hemorrhagic stroke. Methods-Structural MRI, resting-state functional MRI, and electroencephalography were performed on 25 awake and unresponsive patients with acute intracerebral and subarachnoid hemorrhage. Structural injury was assessed via volumetric T1-weighted MRI analysis. Functional connectivity differences were analyzed against a template of standard resting-state networks. The default mode network (DMN) and the task-positive network were investigated using seedbased functional connectivity. Networks were interrogated by pairwise coherence of electroencephalograph leads in regions of interest defined by functional MRI. Results-Functional imaging of unresponsive patients identified significant differences in 6 of 16 standard resting-state networks. Significant voxels were found in premotor cortex, dorsal anterior cingulate gyrus, and supplementary motor area. Direct interrogation of the DMN and task-positive network revealed loss of connectivity between the DMN and the orbitofrontal cortex and new connections between the task-positive network and DMN. Coherence between electrodes corresponding to right executive network and visual networks was also decreased in unresponsive patients. Conclusions-Resting

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Section: Discussionsupporting

confidence: 79%

Frontal Networks Associated With Command Following After Hemorrhagic Stroke

Mikell

Banks

Frey

et al. 2015

Stroke

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“…For example, the delta band has been related to attention to internal processing during performance of mental tasks [48], and the theta band to working memory, focused attention [49], executive functions [50], and task difficulty [51]. Finally, the beta band has been associated with attention during cognitive processes [52].…”

Section: Discussionmentioning

confidence: 99%

EEG Correlations during WCST Performance in Female Adolescents with Sexual Abuse-Related Post-Traumatic Stress Disorder

Martínez¹,

Sanz-Martín²,

Guevara³

et al. 2015

JBBS

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Child sexual abuse (CSA) survivors can present post-traumatic stress disorder (PTSD) and alterations in EEG activity and cognition. The aim of this study was to evaluate EEG correlations in female adolescents with CSA-related PTSD during performance of the Wisconsin Card-Sorting Test (WSCT). Inter-and intrahemispheric EEG correlations (INTERr and INTRAr) of those subjects were calculated at rest and during performance of WCST. On this task, the PTSD group obtained higher scores than the control group for the number of correct responses and failure to maintain set. In the between-groups comparisons, the PTSD group presented a higher INTERr between frontal areas in the gamma and slow bands, as well as a higher correlation in the delta band at Fp1-F3; however, this group presented a lower INTRAr between Fp1-P3 and Fp2-P4 in the theta and alpha1 bands. In the comparison between conditions, the PTSD group presented an increased correlation during execution of the WCST, mainly in the gamma band, while the control group showed a decrease of INTRAr in the slow bands. Results are discussed with respect to the influence of CSArelated PTSD on the development of cognition and functional connectivity in the brain.

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“…Why was specifically theta oscillation enhanced by tSOS and not, for example, alpha activity dominant during quiet wakefulness (33)? One simple reason may be that during quiet wakefulness, alpha activity has a posterior focus that was less affected by tSOS location over the dorsolateral prefrontal cortex than EEG theta activity for which a prefrontal current source has been estimated (34). A preferred coupling between slowly oscillating potential fields Ϸ0.75 Hz and oscillations at theta frequency may, however, reflect a basic functional relationship between the cortical networks underlying these oscillatory frequencies.…”

Section: Discussionmentioning

confidence: 99%

Slow oscillation electrical brain stimulation during waking promotes EEG theta activity and memory encoding

Kirov

Weiss

Siebner

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

190

170

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The application of transcranial slow oscillation stimulation (tSOS; 0.75 Hz) was previously shown to enhance widespread endogenous EEG slow oscillatory activity when applied during a sleep period characterized by emerging endogenous slow oscillatory activity. Processes of memory consolidation typically occurring during this state of sleep were also enhanced. Here, we show that the same tSOS applied in the waking brain also induced an increase in endogenous EEG slow oscillations (0.4 -1.2 Hz), although in a topographically restricted fashion. Applied during wakefulness tSOS, additionally, resulted in a marked and widespread increase in EEG theta (4 -8 Hz) activity. During wake, tSOS did not enhance consolidation of memories when applied after learning, but improved encoding of hippocampus-dependent memories when applied during learning. We conclude that the EEG frequency and related memory processes induced by tSOS critically depend on brain state. In response to tSOS during wakefulness the brain transposes stimulation by responding preferentially with theta oscillations and facilitated encoding.transcranial slow oscillation stimulation ͉ sleep ͉ plasticity ͉ cortex ͉ tDCS (transcranial direct current stimulation)

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Human cortical circuits for central executive function emerge by theta phase synchronization

Cited by 155 publications

References 58 publications

Frontal Networks Associated With Command Following After Hemorrhagic Stroke

Frontal Networks Associated With Command Following After Hemorrhagic Stroke

EEG Correlations during WCST Performance in Female Adolescents with Sexual Abuse-Related Post-Traumatic Stress Disorder

Slow oscillation electrical brain stimulation during waking promotes EEG theta activity and memory encoding

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