The thalamus as the generator and modulator of EEG alpha rhythm: a combined PET/EEG study with lorazepam challenge in humans

  title={The thalamus as the generator and modulator of EEG alpha rhythm: a combined PET/EEG study with lorazepam challenge in humans},
  author={Mathias Schreckenberger and Christian Lange-Asschenfeldt and Matthias Lochmann and Klaus Mann and Thomas Siessmeier and Hans-Georg Buchholz and Peter Bartenstein and Gerhard Gr{\"u}nder},
Neural correlates of regional EEG power change
Spontaneous Slow Fluctuation of EEG Alpha Rhythm Reflects Activity in Deep-Brain Structures: A Simultaneous EEG-fMRI Study
Data suggest that different subcortical structures contribute to slow and fast modulations of alpha spectra on brain EEG, which is associated with brain activity in the cerebral neocortex and deep brain structures.
Relationship Between Alpha Rhythm and the Default Mode Network: An EEG-fMRI Study
The results highlight the relationship between DMN activity and alpha power, indicating that networks, such as the DMN, may have subcomponents that exhibit different behaviors.
[The possibilities and limitations of simultaneous EEG-fMRI registration--the alpha rhythm study].
The obtained results indicate overlapping regions of the presented EEG outcomes and fMRI maps for alpha rhythm study, which might reflect the extensive brain process involving the thalamo-occipito-frontal connections.
Real‐time fMRI neurofeedback of the mediodorsal and anterior thalamus enhances correlation between thalamic BOLD activity and alpha EEG rhythm
The results demonstrate the potential of the rtfMRI‐nf with simultaneous EEG for noninvasive neuromodulation studies of human brain function and suggest that the temporal correlation between the MD BOLD activity and posterior alpha EEG power is modulated by the interaction between theMD and the inferior precuneus.
On the Physiological Modulation and Potential Mechanisms Underlying Parieto-Occipital Alpha Oscillations
This Research Topic reviews human pharmacological studies usingEEG and magnetoencephalography that investigated the physiological mechanisms behind posterior alpha to speculate that the functional role of alpha might depend on physiological excitation as much as on physiological inhibition.
Assessing the Retest Reliability of Prefrontal EEG Markers of Brain Rhythm Slowing in the Eyes-Closed Resting State
It was found that EEG slowing markers, which were used for assessing the aging or degeneration of brain functions, could be reliably extracted from a prefrontal EEG alone and may constitute a low-cost, wearable, wireless, easily accessible, and noninvasive tool for neurological assessment.
The relationship between alpha burst activity and the default mode network.
The results confirm the OCC source of alpha activity a nd additional specific sources of ABS in the DMN, and an increased blood oxygenation level‑dependent signal change in DMN nodes - precuneus and prefrontal cortex.


EEG Alpha Rhythm and Glucose Metabolic Rate in the Thalamus in Schizophrenia
The present findings provide evidence for involvement of the thalamus in the generation of alpha rhythm in humans and suggest differences in thalamocortical circuits between normal controls and schizophrenic subjects.
Relations between PET-derived measures of thalamic glucose metabolism and EEG alpha power.
Electroencephalogram (EEG) alpha power has been demonstrated to be inversely related to mental activity and has subsequently been used as an indirect measure of brain activation. The thalamus has
Neural networks for generation and suppression of alpha rhythm: a PET study
Neuronal activities of the brain stem and limbic system that are positively correlated with alpha power may provide an anatomical basis for studies of the relationship between emotional state and brain rhythm in health and disease.
Simultaneous EEG and fMRI of the alpha rhythm
It is found that increased alpha power was correlated with decreased MRI signal in multiple regions of occipital, superior temporal, inferior frontal, and cingulate cortex, and with increased signal in the thalamus and insula and may have important implications for interpretation of resting baseline in fMRI studies.
Reproducibility of regional brain metabolic responses to lorazepam.
  • G. Wang, N. Volkow, J. Fowler
  • Medicine, Biology
    Journal of nuclear medicine : official publication, Society of Nuclear Medicine
  • 1996
The test-retest reproducibility in regional brain metabolic responses was measured, and although the global and regional metabolic values were significantly lower for the repeated evaluation, the response to lorazepam was highly reproducible.