P300 Event Related Potentials
Mostrando 13-17 de 17 artigos, teses e dissertações.
-
13. Normal P300 following extensive damage to the left medial temporal lobe.
Event-related potentials (ERPs) were recorded during auditory and visual "oddball" tasks from a patient with a severe verbal memory deficit due to a low grade infiltrating glioma which involved the full extent of the left medial temporal lobe. In both sensory modalities, the patient's oddball-evoked P300s were symmetrical and of normal amplitude. These findi
-
14. Electroencephalographic Brain Dynamics Following Manually Responded Visual Targets
Scalp-recorded electroencephalographic (EEG) signals produced by partial synchronization of cortical field activity mix locally synchronous electrical activities of many cortical areas. Analysis of event-related EEG signals typically assumes that poststimulus potentials emerge out of a flat baseline. Signals associated with a particular type of cognitive eve
Public Library of Science.
-
15. Clinical application of electrophysiological markers in the differential diagnosis of depression and very mild Alzheimer's disease.
BACKGROUND--Current evidence indicates that, on their own, neither flash visual evoked responses (FVEPs) nor event related potentials (ERPs) are sufficiently useful to the clinician in the very early stages of memory dysfunction. However, the possibilities for the combined use of these measures has not been fully explored. METHODS--This study examined the cl
-
16. Neurological and neuropsychological performance in HIV seropositive men without symptoms.
Ninety five HIV seropositive and 32 seronegative homosexual men were recruited to a prospective study of the early features and natural history of the neurological manifestations of HIV infection. There was no evidence from the initial neurological examination, a neuropsychological test battery, nerve conduction studies, somatosensory evoked potentials from
-
17. Active touch exploration of extrapersonal space elicits specific electrogenesis in the right cerebral hemisphere of intact right-handed man.
Language and analytic processing are currently thought to be represented in the left hemisphere, whereas spatial and holistic processing would involve primarily the right hemisphere in man. An experimental paradigm for engaging the nonlanguage hemisphere (generally the right) is described. This involves active touch exploration with the index finger to ident