Detection and localization of brainstem lesions with auditory brainstem potentials

Maurer, K.; Leitner, H.; Schafer, Edward W. P.

doi:10.1007/978-94-011-6645-4_44

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…This may result in an absent late vertex potential with the emergence of an ultra late response thought to be transmitted via C-fibres. 16 Tumours, which affect the specific nerve tracts, 57 and factors which affect the brain, such as ischaemia 67 and coma 38 45 77 can also affect evoked responses.…”

Section: Neurological Diseasementioning

confidence: 99%

Evoked responses in anaesthesia

Thornton¹,

Sharpe²

1998

British Journal of Anaesthesia

148

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Section: Neurological Diseasementioning

confidence: 99%

Evoked responses in anaesthesia

Thornton¹,

Sharpe²

1998

British Journal of Anaesthesia

148

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“…The generator of each ABR component of manlO, 11,13,[20][21][22]24,26,27 seems to be similar to BAEP component in the cat 4,12 and Allen and Star 3 demonstrated the similarity if ABRs across species in comparison with responses in man, monkey, cat and rats, although component amplitude varied in each species. wave I is thought to be generated from the cochlear nerve both in man 10,11,20--22, 24, 27 and cat 4' 12, and wave V from the doral part of the lower midbrain (possibly the inferior colliculus) both in man Ih 22, 24, 26 and cat 4.…”

Section: Discussionmentioning

confidence: 85%

Effects of an expanding supratentorial mass on the auditory brain-stem responses in baboons

Tsutsui¹,

Nitta²,

Ladds³

et al. 1986

Acta neurochir

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This study was carried out to investigate the effects of an expanding supratentorial mass on auditory brain-stem responses (ABRs). A balloon was inserted into the supratentorial epidural space of seven baboons (in two cases, in the right occipital area; in five cases, in the right temporal area). The balloons were inflated at a rate of 0.2 ml/minute to increase intracranial pressure (ICP). ICP (right frontal epidural pressure) and blood pressure (BP) were continuously recorded. Recordings of ABRs (vertex to mastoid on both sides) were made serially. Pupillary changes were also recorded. At 30 mmHg ICP, the amplitude of wave V on the right side was observed to be significantly attenuated (p less than 0.02). At 50 mm Hg ICP, the latency of wave V on the right side was significantly prolonged compared with that at 30 mm Hg ICP (p less than 0.02). At 70 mmHg ICP, significantly decreased amplitude of wave V on the left side was also observed (p less than 0.02, from the control), associated with significant increased latency of wave IV on the right side (p less than 0.01, from the control; p less than 0.05, from 50 mm Hg ICP). Finally, waves IV and V on both sides substantially disappeared at 100 mm Hg ICP. Anisocoria appeared in four animals at 30-50 mm Hg (mean +/- SD; 45 +/- 8.7) ICP. The amplitude of wave V was significantly decreased in these circumstances (p less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

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“…Concerning the differential diagnosis of acoustic neurinomas several authors pointed out the increased wave V latency [22,23,111,135], the interaural latency (ITS) of wave V [22,111] and the increased IPL I-V [23,36]. Contralateral BAEP changes [74,83,84,96,101,111,115,144,145] and the loss of all waves on the tumour side [36,74,84,101,111,112] have been described in detail.…”

Section: Masseter Reflexmentioning

confidence: 98%

“…The first description of BAEP changes in acoustic neurinomas [118] was followed by a series of papers about the same subject [21,36,52,82,83,84,107,111,112,125]. Concerning the differential diagnosis of acoustic neurinomas several authors pointed out the increased wave V latency [22,23,111,135], the interaural latency (ITS) of wave V [22,111] and the increased IPL I-V [23,36].…”

Section: Masseter Reflexmentioning

confidence: 99%

Evoked potentials and brain stem reflexes

Klug¹,

Csécsei

1985

Neurosurg. Rev.

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The recording of evoked potentials (EPs) has become one of the most useful functional diagnostic techniques in the neurosciences during recent years. In combination with the neurophysiological investigation of brain stem reflexes (BSRs) EPs provide good information concerning circumscribed and diffuse brain and brain stem lesions. In this article the role of EPs and BSRs will be pointed out with special regard to their use in neurosurgery concerning awake and comatose patients as well. Pathological findings caused by extracerebral factors or due to neurological (systemic) and otological diseases will be discussed from the aspect of differential diagnosis only. Evoked potentials described in this paper are short latency potentials which are related to more or less defined generators in the peripheral and central nervous system. EPs of long latency seem to play a role in cognitive, affective and integrative functions of the central nervous system and they will not be dealt with in this article. In recent years an increasing number of review articles and monographs dealing with several aspects of evoked potentials has appeared [16, 17, 18, 25, 69, 80, 84, 122, 123, 124, 127, 130].

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Detection and localization of brainstem lesions with auditory brainstem potentials

Cited by 11 publications

References 3 publications

Evoked responses in anaesthesia

Evoked responses in anaesthesia

Effects of an expanding supratentorial mass on the auditory brain-stem responses in baboons

Evoked potentials and brain stem reflexes

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