scholarly journals 4. An Experimental Study on Photic Evoked Potentials in the Visual Cortex and the Brain Stem of Cats in Relation to Acute Intracranial Hypertension

1971 ◽  
Vol 11 ◽  
pp. 104-105
Author(s):  
Tadahisa KURIMOTO ◽  
Kentaro KOSHINO ◽  
Kuniyuki SOMEDA ◽  
Satoru KUBOTA ◽  
Takayuki NAKAJIMA ◽  
...  
Keyword(s):  
Experimental Study ◽  
Visual Cortex ◽  
Evoked Potentials ◽  
Intracranial Hypertension ◽  
Brain Stem ◽  
The Brain

Changes in Local Blood Flow of the Brain Stem in Acute Intracranial Hypertension — An Experimental Study

1983 ◽  
pp. 458-462 ◽  
Author(s):  
N. Sunami ◽  
T. Tsutsui ◽  
Y. Honma ◽  
S. Fujimoto ◽  
S. Nagao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Blood Flow ◽  
Intracranial Hypertension ◽  
Brain Stem ◽  
Local Blood Flow ◽  
The Brain

Effect of adrenocortical hormones on evoked potentials in the brain stem

Neurology ◽  
1961 ◽  
Vol 11 (2) ◽  
pp. 109-109 ◽  
Author(s):  
S. Feldman ◽  
J. C. Todt ◽  
R. W. Porter
Keyword(s):  
Evoked Potentials ◽  
Brain Stem ◽  
Adrenocortical Hormones ◽  
The Brain

Cerebral cysticercosis with aqueductal obstruction

1980 ◽  
Vol 53 (2) ◽  
pp. 252-255 ◽  
Author(s):  
Tung Pui Poon ◽  
Edward J. Arida ◽  
Wolodymyr P. Tyschenko
Keyword(s):  
Intracranial Hypertension ◽  
Brain Stem ◽  
Normal Pressure Hydrocephalus ◽  
Signs And Symptoms ◽  
Normal Pressure ◽  
Content Type ◽  
Neurological Signs ◽  
Cerebral Cysticercosis ◽  
The Brain ◽  
Fine Print

✓ The authors report a case of cerebral cysticercosis which presented with generalized nonspecific neurological signs and symptoms attributed to acute aqueductal obstruction, with concomitant intracranial hypertension. These were characteristic intracranial calcifications along with angiographically demonstrated signs of hydrocephalus. Contrast encephalography clearly demonstrated aqueductal obstruction. Pathologically, the aqueductal obstruction was shown to be due to parasitic invasion of the brain stem with compression of the aqueduct. The presence of typical intracranial calcification in conjunction with either obstructive or normal-pressure hydrocephalus should alert the observer to the possibility of cerebral cysticercosis.

Noninvasive localization of brain-stem lesions in the cat with multimodality evoked potentials

1981 ◽  
Vol 54 (6) ◽  
pp. 740-750 ◽  
Author(s):  
Richard P. Greenberg ◽  
Donald M. Stablein ◽  
Donald P. Becker
Keyword(s):  
Evoked Potentials ◽  
Brain Stem ◽  
Evoked Potential ◽  
Animal Experiments ◽  
Content Type ◽  
Central Nervous System Dysfunction ◽  
Multimodality Evoked Potentials ◽  
Stem Lesions ◽  
The Brain ◽  
Fine Print

✓ Multimodality evoked potential (MEP) data from over 300 comatose head-injured patients suggest that central nervous system dysfunction of the brain stem and/or hemispheres can be localized with this noninvasive neuroelectric technique. Based on this work, decerebrate motor posturing and prolonged coma are not associated with brain-stem dysfunction but rather with dysfunction of the hemispheres, while absent pupillary and oculocephalic responses are correlated with brain-stem dysfunction alone. However, the accuracy with which MEP data localized human brain-stem or hemispheric dysfunction could not be confirmed by pathological correlation because of low mortality and the small number of autopsies obtained in the patients who died. Therefore, this study was undertaken in an animal model of brain-stem lesion. Complete brain-stem transections were made at the cervicomedullary junction, the medulla just caudal to the eighth nerve, and at the intercollicular region. All cortical visual evoked potential (VEP) peaks were reduced in amplitude and delayed by each of the brain-stem transections, but none of the peaks was abolished. In spite of brain-stem transection, VEP's can be used to gain information about hemispheric function. Somatosensory (SEP) and auditory cortically generated evoked potentials (AEP) were abolished by these brain-stem transections, but early-latency brain-stem SEP and AEP data could accurately localize specific areas of brain-stem dysfunction caused by the lesions. Observations made on human MEP data seem to be confirmed by these animal experiments. Correlations between human and cat MEP data are discussed.

Auditory Evoked Potentials in Gliomas of the Brain Stem

1983 ◽  
Vol 40 (12) ◽  
pp. 769-771 ◽  
Author(s):  
A. Martinez-Arizala ◽  
C. D. Brown ◽  
G. E. McCarty
Keyword(s):  
Evoked Potentials ◽  
Brain Stem ◽  
Auditory Evoked Potentials ◽  
The Brain
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