EEG Related to Cerebral Metabolism and Blood Flow

Dh, Ingvar; Rosén, I; Jóhannesson, G

doi:10.1055/s-0028-1094611

Cited by 43 publications

(19 citation statements)

References 20 publications

(26 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lardon and Polich [9] compared the MF in control and aerobic exercise groups of healthy adults, and they found higher TMF in the exercise group. A possible explanation for this finding is a positive correlation between EEG frequency and cerebral blood flow [5] . In our study, we observed an increase in MF after 6 months of treatment in both groups.…”

Section: Discussionmentioning

confidence: 94%

See 1 more Smart Citation

Effects of Exercise on Electroencephalographic Mean Frequency in Depressed Elderly Subjects

Silveira

Deslandes²,

Moraes³

et al. 2010

Neuropsychobiology

View full text Add to dashboard Cite

Background: An analysis of cortical activity by electroencephalogram (EEG) may show different patterns in depressed and normal individuals. Objectives: Our study aimed (1) to compare the total mean frequency (TMF) and mean EEG frequency per bands (MFB) in depressed and healthy elderly individuals, and (2) to verify the effect of exercise as an additional treatment for major depressive disorder (MDD; according to DSM-IV) via an assessment of depressive symptoms, TMF and MFB. Methods: This research was divided into 2 studies. In study 1, we assessed 45 elderly individuals (13 normal and 32 depressive) in a cross-sectional design to search for differences in TMF and MFB. In study 2, we conducted a longitudinal study to assess the effect of exercise on MDD. Twenty depressed elderly persons who were on clinical treatment were allocated to a control group or an exercise group. Subjects were assessed at baseline and after 6 months with the Hamilton Depression Rating Scale, also assessing the TMF and MFB. Results: Our cross-sectional study showed that a lower mean frequency (MF) in posterior areas is related to depression in the elderly. Moreover, in our longitudinal study, we observed that depressed elderly individuals showed a better response to treatment and an increase in MF after physical training. Conclusion: The interaction between exercise and pharmacological treatment may increase the TMF in posterior areas of depressed elderly individuals after 6 months.

show abstract

Section: Discussionmentioning

confidence: 94%

“…In fact, the mean EEG frequency is positively correlated with cerebral blood flow and glucose metabolism [5,6] . However, only few studies have investigated this parameter in MDD.…”

mentioning

confidence: 99%

Effects of Exercise on Electroencephalographic Mean Frequency in Depressed Elderly Subjects

Silveira

Deslandes²,

Moraes³

et al. 2010

Neuropsychobiology

View full text Add to dashboard Cite

show abstract

“…The IAF was determined by the frequency position of the global center of gravity of the mean spectral amplitude. In comparison to previous studies, where either the mean global CBF of a subject was used (Ingvar et al, 1979;Kuschinsky, 1993) or specific regions of interest (Alper et al, 2006) were analyzed, our analysis yields accurate and detailed regional information. This increased spatial information was partly also achieved by the higher spatial resolution of ASL as compared to PET but also by a different analysis method.…”

Section: Discussionmentioning

confidence: 98%

“…Only a few studies considered variations in the alpha peak frequency. Early studies revealed a relationship between mean global CBF or metabolism and overall EEG mean frequency (Ingvar et al, 1979;Kuschinsky, 1993). More recently, Alper et al (2006) performed a regionally more detailed study.…”

Section: Introductionmentioning

confidence: 98%

Association of individual resting state EEG alpha frequency and cerebral blood flow

et al. 2010

View full text Add to dashboard Cite

“…The normal cellular mechanism underlying EEG (MEG) signal requires the metabolism of glucose and an abundant supply of oxygen, Thus, the measured EEG signal is assumed to be closely related to the underlying spatio-temporal pattern of metabolism in the normal human brain [93], [94], [95]. Recently we showed in a nearly identical group of subjects that GSP-BOLD signal correlations are not significantly different between children and adults for eyes open and eyes closed resting conditions [50], irrespective of the examined frequency band.…”

Section: Discussionmentioning

confidence: 99%

Developmental Changes of BOLD Signal Correlations with Global Human EEG Power and Synchronization during Working Memory

et al. 2012

View full text Add to dashboard Cite

In humans, theta band (5–7 Hz) power typically increases when performing cognitively demanding working memory (WM) tasks, and simultaneous EEG-fMRI recordings have revealed an inverse relationship between theta power and the BOLD (blood oxygen level dependent) signal in the default mode network during WM. However, synchronization also plays a fundamental role in cognitive processing, and the level of theta and higher frequency band synchronization is modulated during WM. Yet, little is known about the link between BOLD, EEG power, and EEG synchronization during WM, and how these measures develop with human brain maturation or relate to behavioral changes. We examined EEG-BOLD signal correlations from 18 young adults and 15 school-aged children for age-dependent effects during a load-modulated Sternberg WM task. Frontal load (in-)dependent EEG theta power was significantly enhanced in children compared to adults, while adults showed stronger fMRI load effects. Children demonstrated a stronger negative correlation between global theta power and the BOLD signal in the default mode network relative to adults. Therefore, we conclude that theta power mediates the suppression of a task-irrelevant network. We further conclude that children suppress this network even more than adults, probably from an increased level of task-preparedness to compensate for not fully mature cognitive functions, reflected in lower response accuracy and increased reaction time. In contrast to power, correlations between instantaneous theta global field synchronization and the BOLD signal were exclusively positive in both age groups but only significant in adults in the frontal-parietal and posterior cingulate cortices. Furthermore, theta synchronization was weaker in children and was –in contrast to EEG power– positively correlated with response accuracy in both age groups. In summary we conclude that theta EEG-BOLD signal correlations differ between spectral power and synchronization and that these opposite correlations with different distributions undergo similar and significant neuronal developments with brain maturation.

show abstract

EEG Related to Cerebral Metabolism and Blood Flow

Cited by 43 publications

References 20 publications

Effects of Exercise on Electroencephalographic Mean Frequency in Depressed Elderly Subjects

Effects of Exercise on Electroencephalographic Mean Frequency in Depressed Elderly Subjects

Association of individual resting state EEG alpha frequency and cerebral blood flow

Developmental Changes of BOLD Signal Correlations with Global Human EEG Power and Synchronization during Working Memory

Contact Info

Product

Resources

About