Journal ArticleDOI
P 300 latency of the auditory evoked potential in dementia.
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TLDR
It was concluded that the results of normal latency in dementia is obviously due to the control of medication and the exclusion of patients who were unable to perform the required counting task.Abstract:
A two-tone discrimination paradigm was employed to elicit the P 300 component of the event related brain potential from 10 demented patients. P 300 latency was found not to be prolonged in the dementia group compared to age normative predictions derived from a patient control group. This finding contrasts with a number of studies of demented patients that generally found P 300 latency to exceed normative data. It was concluded that the results of normal latency in dementia is obviously due to the control of medication and the exclusion of patients who were unable to perform the required counting task.read more
Citations
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Journal ArticleDOI
Rapid stream stimulation and the recognition potential.
TL;DR: A new method of stimulation was devised that evoked the recognition potential for recognizable images, but virtually no response of any kind for non-recognizable images.
Journal ArticleDOI
Eye closure affects flash VEP latency in dementia
TL;DR: The dependence of latency changes on closure of the eyes seems to negate the direct effect of lesions upon visual structures and suggests an impairment of the modulatory action of non-visual afferents upon the activity of the visual cortex.
Journal ArticleDOI
P2 Latency of the flash visual evoked potential in dementia
K. Ruessmann,U. Beneicke +1 more
TL;DR: It was stated that the result of normal latency in dementia can hardly be explained only in terms of the sampling method used in this study (unselected dements) and that the finding is possibly due to the increase in latency across the adult life span in normal aging which was found to be much higher than previously reported.
Book ChapterDOI
The Neurophysiology of Dementia
TL;DR: This chapter will review the neurophysiological changes seen with ageing, the abnormalities associated with dementia and their clinical significance.
Journal ArticleDOI
Evoked Potentials in Neurophysiologic Assessment of Dementias
TL;DR: Investigating late auditory responses and median nerve somatosensory evoked potentials in patients fulfilling the criteria of senile dementia of the Alzheimer type or multiinfarct dementia suggested a subcortical disturbance in MID, which implies intracortical disturbances in Alzheimer's disease.
References
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Journal ArticleDOI
“Mini-mental state”: A practical method for grading the cognitive state of patients for the clinician
Marshal F. Folstein,Marshal F. Folstein,Susan E B Folstein,Susan E B Folstein,Paul R. McHugh,Paul R. McHugh +5 more
TL;DR: A simplified, scored form of the cognitive mental status examination, the “Mini-Mental State” (MMS) which includes eleven questions, requires only 5-10 min to administer, and is therefore practical to use serially and routinely.
A practical method for grading the cognitive state of patients for the clinician
TL;DR: The Mini-Mental State (MMS) as mentioned in this paper is a simplified version of the standard WAIS with eleven questions and requires only 5-10 min to administer, and is therefore practical to use serially and routinely.
Journal ArticleDOI
Age-related variations in evoked potentials to auditory stimuli in normal human subjects
TL;DR: An aging process is relfected in the auditory evoked potential which is not the simple inverse of maturational processes.
Journal ArticleDOI
Clinical application of the P3 component of event-related potentials. II. Dementia, depression and schizophrenia.
Adolf Pfefferbaum,Adolf Pfefferbaum,Brant G Wenegrat,Brant G Wenegrat,Judith M. Ford,Judith M. Ford,Walton T. Roth,Walton T. Roth,Bert S. Kopell,Bert S. Kopell +9 more
TL;DR: The data from these two paradigms suggest that the P3 amplitude and latency abnormalities observed reflect a common, rather than a diagnostically specific deficit, in patients with dementia, schizophrenia and depression.
Journal ArticleDOI
Long latency event-related components of the auditory evoked potential in dementia
TL;DR: The magnitude of the latency change of the P3 component in dementia relative to normal was sufficiently large that it may provide a practical and objective measure of dementia in a clinical setting.