Alzheimer disease versus mixed dementias: an EEG perspective.

Objective: To examine differences between patients with AD (n=54) and mixed (vascular Alzheimer) dementia (n=24), and controls (n=66), with respect to clinic, neuropsychology, neuroradiology and quantitative EEG (QEEG).

Methods: We used CAMDEX, CT and QEEG.

Results: Patients with mixed dementia had more subcortical lesions.

Rivastigmine effects on EEG spectra and three-dimensional LORETA functional imaging in Alzheimer's disease.

Objective: The objective of the study is to investigate the electrocortical and the global cognitive effects of 3 months rivastigmine medication in a group of mild to moderate Alzheimer's disease patients.

Materials And Methods: Multichannel EEG and cognitive performances measured with the Mini Mental State Examination in a group of 16 patients with mild to moderate Alzheimer's Disease were collected before and 3 months after the onset of rivastigmine medication.

Results: Spectral analysis of the EEG data showed a significant power decrease in the delta and theta frequency bands during rivastigmine medication, i.

Modulation of anticipatory emotion and perception processing by cognitive control.

Strategies of cognitive control are helpful in reducing anxiety experienced during anticipation of unpleasant or potentially unpleasant events. We investigated the associated cerebral information processing underlying the use of a specific cognitive control strategy during the anticipation of affect-laden events. Using functional magnetic resonance imaging, we examined differential brain activity during anticipation of events of unknown and negative emotional valence in a group of eighteen healthy subjects that used a cognitive control strategy, similar to "reality checking" as used in psychotherapy, compared with a group of sixteen subjects that did not exert cognitive control.

Correlation between disease severity and brain electric LORETA tomography in Alzheimer's disease.

Objective: To compare EEG power spectra and LORETA-computed intracortical activity between Alzheimer's disease (AD) patients and healthy controls, and to correlate the results with cognitive performance in the AD group.

Methods: Nineteen channel resting EEG was recorded in 21 mild to moderate AD patients and in 23 controls. Power spectra and intracortical LORETA tomography were computed in seven frequency bands and compared between groups.

Unrecognised long-lasting tramadol-induced delirium in two elderly patients. A case report.

We present the cases of two elderly patients with intermittent long-term tramadol intake against chronic back pain. Over a period of more than two years they experienced fluctuating confusional states and cognitive deficits, reversible only after discontinuation of tramadol. According to the DSM IV-criteria, an unrecognised recurrent tramadol-induced delirium can be diagnosed in both cases.