Recovery from cerebral ischaemia. EEG, cerebral blood flow and clinical symptomatology in the first three years after a stroke

Weerd, A.W. de; Veldhuizen, R.J.; Veering, M.M.; Poortvliet, D.C.J.; Jonkman, E.J.

doi:10.1016/0013-4694(88)90080-6

Cited by 32 publications

(27 citation statements)

References 33 publications

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“…Clinical evaluation of motor, ADL, and communication ability was performed at 3 and 10 weeks after stroke because most of the clinical and electrophysiological changes occur during this period. 3 Results indicated that the absence of cortical potentials is a strong indicator of a poor functional performance. Similar findings were presented by Ring and Finnegan.16 Postrehabilitation functional performance was found to be poor in patients without cortical potentials in the first month after stroke.…”

Section: Discussionmentioning

confidence: 99%

Upper limb somatosensory evoked potentials as a predictor of rehabilitation progress in dominant hemisphere stroke patients.

Keren

Ring

Solzi

et al. 1993

Stroke

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Background and Purpose: The aim of this study was to determine the predictive yield of upper limb short latency somatosensory evoked potential (USEP) in patients with first stroke in the dominant hemisphere.Methods: Nineteen patients (average age, 58 years) were evaluated twice: on arrival at the rehabilitation center, approximately 3 weeks after the stroke, and again approximately 10 weeks later. The clinical assessment included a quantitative evaluation of motor ability, independence in activities of daily living, and communication ability. USEP was recorded during the week of the initial clinical evaluation. Special attention was paid to the relations between USEP parameters and the dynamics of the clinical condition.Results: The seven patients in whom no cortical potential could be detected showed the worst outcomes; however, the existence of cortical potentials in the remaining 12 patients did not provide a precise prediction of their "rehabilitative capacity" (ie, the extent of their progress). A correlation was established between the amplitude of the potentials recorded over both hemispheres and changes in communication ability. Additional findings included an association between shortened central conduction time over the damaged hemisphere during the first month after stroke and improvement in motor ability.Conclusions: USEP can serve as an adjuvant tool for predicting the recovery progress of stroke patients.

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Section: Discussionmentioning

confidence: 99%

Upper limb somatosensory evoked potentials as a predictor of rehabilitation progress in dominant hemisphere stroke patients.

Keren

Ring

Solzi

et al. 1993

Stroke

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“…9 Normally, a tight correlation exists between regional cerebral blood flow (CBF) and oxygen uptake and, therefore, neuronal metabolism. During recovery from stroke 10 or under the influence of some anesthetics such as isoflurane, 11 cerebral metabolism may be partially dissociated from CBF. Under these circumstances, the EEG more closely reflects cerebral metabolism than does the CBF, making the EEG potentially more valuable as a measure of neuronal function.…”

Section: S An Electroencephalogram (Eeg) Useful In Treatingmentioning

confidence: 99%

“…Simply put, this is because abnormal EEG waves are produced by sick neurons: when these neurons either die or recover, many EEG abnormalities subside. Longitudinal studies 10 show that most EEG improvement occurs within the first 3 months. On the other hand, the presence of PLEDs almost always indicates a recent event.…”

Section: Does This Patient Have a New Stroke Or An Old Stroke?mentioning

confidence: 99%

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Current role of electroencephalography in cerebral ischemia.

Faught

1993

Stroke

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“…These results are in agreement with positron emission tomography and functional MRI studies, which have shown that 3 months after left-hemisphere stroke onset, there is increased metabolic activity in the left hemisphere. 29,30 Corroborating results have been provided by several EEG [31][32][33] and behavioral 34 -36 studies that showed enhancement in electrical activity and recovery of language functions during 3 months after lefthemisphere stroke.…”

Section: Ilvonen Et Al Auditory Discrimination After Left-hemisphere mentioning

confidence: 99%

Editorial Comment—Implementing Results of Stroke Recovery Research Into Clinical Practice

Cramer

2003

Stroke

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Background and Purpose-We sought to determine the recovery of cortical auditory discrimination in aphasic, left-hemisphere-stroke patients by using an electrophysiological response called mismatch negativity (MMN) and speech-comprehension tests. Methods-MMN in 8 left-hemisphere stroke patients was recorded in response to duration and frequency changes in a repetitive, harmonically rich tone 4 and 10 days and again 3 and 6 months after their first unilateral stroke. Eight age-matched, healthy persons served as control subjects. Results-At 4 days after stroke onset, patients' sound discrimination was impaired in their left hemisphere, as suggested by attenuated MMNs, especially to right-ear stimuli. At 3 months after stroke, however, MMN to the right-ear duration change had significantly increased and was of normal size. A significant change for the frequency MMN was found for left-ear stimuli between 3 and 6 months after stroke. During the follow-up period, progressive improvement in speech-comprehension tests was also observed. Furthermore, there was a significant correlation between the change in the duration MMN amplitude and the Boston Diagnostic Aphasia Examination speech-comprehension test from 10 days to 3 months after stroke. Conclusions-These results suggest that the MMN can be used as an index of the recovery of auditory discrimination.

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Recovery from cerebral ischaemia. EEG, cerebral blood flow and clinical symptomatology in the first three years after a stroke

Cited by 32 publications

References 33 publications

Upper limb somatosensory evoked potentials as a predictor of rehabilitation progress in dominant hemisphere stroke patients.

Upper limb somatosensory evoked potentials as a predictor of rehabilitation progress in dominant hemisphere stroke patients.

Current role of electroencephalography in cerebral ischemia.

Editorial Comment—Implementing Results of Stroke Recovery Research Into Clinical Practice

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