Thomas Dierks

TL;DR: An experiment with paranoid schizophrenic patients whose on- and offset of auditory hallucinations could be monitored within one functional magnetic resonance imaging (fMRI) session is described, demonstrating an increase of the blood oxygen level-dependent (BOLD) signal in Heschl's gyrus during the patients' hallucinations.

TL;DR: In this paper, EEG recordings of visual and auditory event-related potentials and functional magnetic resonance imaging (fMRI) when healthy subjects performed an oddball task were performed and significant increases in fMRI signal for target versus non-target conditions were observed in the supramarginal gyrus, frontal operculum and insular cortex bilaterally, and further circumscribed parietal and frontal regions.

TL;DR: During inner speech, the alterations of white matter fiber tracts in patients with frequent hallucinations lead to abnormal coactivation in regions related to the acoustical processing of external stimuli, which may account for the patients' inability to distinguish self-generated thoughts from external stimulation.

TL;DR: The hypothesis of a functional disconnection of neuro-cognitive networks in patients with mild cognitive impairment (MCI) and Alzheimer Dementia was investigated using baseline resting EEG data, and patients showed decreased GFS values in Alpha, Beta, and Gamma frequency bands, and increased GFSvalues in the Delta band, confirming the hypothesized disconnection syndrome.

TL;DR: It is concluded that localization and amplitude of equivalent EEG sources could be promising markers of early Alzheimer's disease and healthy aging.