[Exploration of traumatic brain-injury attention difficulty by event-related potentials].

Objective: To specify, in cognitive processing leading to an action, the localization of difficulties in attention following severe, traumatic brain injury.

Method: Stimulus-locked and response-locked event-related potentials were recorded during a Stroop task in 25 patients with traumatic brain injury and 25 control subjects approximately 4 months after the accident. The latency and amplitude of the waves were compared between the two groups and correlated with clinical data.

[Auditive and somato-sensory event-related potentials in comas: prognostic value for awakening, social and professional reinstatement].

Objective: To appreciate prognostical value of event-related potentials in comatose states and the influence of the stimulation's modality.

Patients And Methods: Thirty-five patients were recorded with the auditory modality whose thirteen were also recorded with the somesthetic modality. They were free of sedation except for five.

[Can neurophysiologic tests differentiate between depression and dementia?].

In order to evaluate the clinical utility of neuro-physiological tests in distinguishing between depression and dementia, we compared quantified EEG and event-related potentials (ERP) in 13 depressed and 12 demented patients. Their cognitive functions were clinically assessed by the ERFC test. When scored with a discriminant function, EEG misclassified one patient and all were well classified with ERP.