Auditory Brain-Stem Potentials With Unilateral Pontine Hemorrhage

Topographical Relationships Between the Brainstem Auditory and Somatosensory Evoked Potentials and the Location of Lesions in Posterior Fossa Stroke

“…18) The topographical relationship between the change of BAEPs and SSEPs and the location of lesions has been investigated using computed tomography (CT), 5,15,20) magnetic resonance (MR) imaging, 6,17) and autopsy findings. 7,19,20) These investigations suggest that human BAEPs and SSEPs originate from the anatomical pathways of auditory 20) and somatosensory tracts. 8) However, the location of generator of each peak of the evoked potentials in the human brainstem remains undetermined.…”

“…15,19,20) The distribution of lesions in cases with no waves or only the I wave demonstrated a common overlapping area at the cerebellar peduncles ipsilateral to stimulation. The generators of the waves after the II wave are not known 9,15,19,20,23,26) in humans, although the generators of the III and V waves may be related to the superior olivary nucleus 1,15) and the inferior colliculus, 7) respectively. In this study, total loss of the III, IV, and V waves was associated with an extensive overlapping area occupying the bilateral pontine tegmenta.…”

“…8) However, the location of generator of each peak of the evoked potentials in the human brainstem remains undetermined. 7,9,12,19,20,25) Stroke affecting the posterior fossa causes a variety of abnormalities in the evoked potentials, and simultaneously causes a well-defined lesion on MR imaging. This study examined 57 cases of stroke with BAEPs and SSEPs, and superimposed the lesions shown by MR imaging on templates to investigate the topographical relationship with the abnormal evoked potentials.…”

Topographical Relationships Between the Brainstem Auditory and Somatosensory Evoked Potentials and the Location of Lesions in Posterior Fossa Stroke

“…18) The topographical relationship between the change of BAEPs and SSEPs and the location of lesions has been investigated using computed tomography (CT), 5,15,20) magnetic resonance (MR) imaging, 6,17) and autopsy findings. 7,19,20) These investigations suggest that human BAEPs and SSEPs originate from the anatomical pathways of auditory 20) and somatosensory tracts. 8) However, the location of generator of each peak of the evoked potentials in the human brainstem remains undetermined.…”

“…15,19,20) The distribution of lesions in cases with no waves or only the I wave demonstrated a common overlapping area at the cerebellar peduncles ipsilateral to stimulation. The generators of the waves after the II wave are not known 9,15,19,20,23,26) in humans, although the generators of the III and V waves may be related to the superior olivary nucleus 1,15) and the inferior colliculus, 7) respectively. In this study, total loss of the III, IV, and V waves was associated with an extensive overlapping area occupying the bilateral pontine tegmenta.…”

“…8) However, the location of generator of each peak of the evoked potentials in the human brainstem remains undetermined. 7,9,12,19,20,25) Stroke affecting the posterior fossa causes a variety of abnormalities in the evoked potentials, and simultaneously causes a well-defined lesion on MR imaging. This study examined 57 cases of stroke with BAEPs and SSEPs, and superimposed the lesions shown by MR imaging on templates to investigate the topographical relationship with the abnormal evoked potentials.…”

Auditory and Electrophysiological Patterns of a Unilateral Lesion of the Lateral Lemniscus

“…Localized brainstem lesions responsible for auditory symptoms are sparsely reported in the literature. Extensive lesions are more frequent [Oh et al, 1981;Hammond et al, 1985;Voordecker et al, 1988] but do not allow for precise anatomic correlation, and auditory symptoms, if any, are hidden by other neurological symptoms. Brainstem lesions limited to the inferior colliculus have been reported, most of them bilateral [Jani et al, 1991;Hu et al, 1997;Johkura et al, 1998;Vitte et al, 2002;Hoistad and Hain, 2003;Kimiskidis et al, 2004], resulting in bilateral sensorineural hearing loss or auditory agnosia with normal or abnormal BAEPs.…”

Topographical Relationships Between the Brainstem Auditory and Somatosensory Evoked Potentials and the Location of Lesions in Posterior Fossa Stroke

“…18) The topographical relationship between the change of BAEPs and SSEPs and the location of lesions has been investigated using computed tomography (CT), 5,15,20) magnetic resonance (MR) imaging, 6,17) and autopsy findings. 7,19,20) These investigations suggest that human BAEPs and SSEPs originate from the anatomical pathways of auditory 20) and somatosensory tracts. 8) However, the location of generator of each peak of the evoked potentials in the human brainstem remains undetermined.…”

“…15,19,20) The distribution of lesions in cases with no waves or only the I wave demonstrated a common overlapping area at the cerebellar peduncles ipsilateral to stimulation. The generators of the waves after the II wave are not known 9,15,19,20,23,26) in humans, although the generators of the III and V waves may be related to the superior olivary nucleus 1,15) and the inferior colliculus, 7) respectively. In this study, total loss of the III, IV, and V waves was associated with an extensive overlapping area occupying the bilateral pontine tegmenta.…”

“…8) However, the location of generator of each peak of the evoked potentials in the human brainstem remains undetermined. 7,9,12,19,20,25) Stroke affecting the posterior fossa causes a variety of abnormalities in the evoked potentials, and simultaneously causes a well-defined lesion on MR imaging. This study examined 57 cases of stroke with BAEPs and SSEPs, and superimposed the lesions shown by MR imaging on templates to investigate the topographical relationship with the abnormal evoked potentials.…”

Auditory and Electrophysiological Patterns of a Unilateral Lesion of the Lateral Lemniscus

“…Localized brainstem lesions responsible for auditory symptoms are sparsely reported in the literature. Extensive lesions are more frequent [Oh et al, 1981;Hammond et al, 1985;Voordecker et al, 1988] but do not allow for precise anatomic correlation, and auditory symptoms, if any, are hidden by other neurological symptoms. Brainstem lesions limited to the inferior colliculus have been reported, most of them bilateral [Jani et al, 1991;Hu et al, 1997;Johkura et al, 1998;Vitte et al, 2002;Hoistad and Hain, 2003;Kimiskidis et al, 2004], resulting in bilateral sensorineural hearing loss or auditory agnosia with normal or abnormal BAEPs.…”

Topographical Relationships Between the Brainstem Auditory and Somatosensory Evoked Potentials and the Location of Lesions in Posterior Fossa Stroke

“…18) The topographical relationship between the change of BAEPs and SSEPs and the location of lesions has been investigated using computed tomography (CT), 5,15,20) magnetic resonance (MR) imaging, 6,17) and autopsy findings. 7,19,20) These investigations suggest that human BAEPs and SSEPs originate from the anatomical pathways of auditory 20) and somatosensory tracts. 8) However, the location of generator of each peak of the evoked potentials in the human brainstem remains undetermined.…”

“…15,19,20) The distribution of lesions in cases with no waves or only the I wave demonstrated a common overlapping area at the cerebellar peduncles ipsilateral to stimulation. The generators of the waves after the II wave are not known 9,15,19,20,23,26) in humans, although the generators of the III and V waves may be related to the superior olivary nucleus 1,15) and the inferior colliculus, 7) respectively. In this study, total loss of the III, IV, and V waves was associated with an extensive overlapping area occupying the bilateral pontine tegmenta.…”

“…8) However, the location of generator of each peak of the evoked potentials in the human brainstem remains undetermined. 7,9,12,19,20,25) Stroke affecting the posterior fossa causes a variety of abnormalities in the evoked potentials, and simultaneously causes a well-defined lesion on MR imaging. This study examined 57 cases of stroke with BAEPs and SSEPs, and superimposed the lesions shown by MR imaging on templates to investigate the topographical relationship with the abnormal evoked potentials.…”

Auditory and Electrophysiological Patterns of a Unilateral Lesion of the Lateral Lemniscus

“…Localized brainstem lesions responsible for auditory symptoms are sparsely reported in the literature. Extensive lesions are more frequent [Oh et al, 1981;Hammond et al, 1985;Voordecker et al, 1988] but do not allow for precise anatomic correlation, and auditory symptoms, if any, are hidden by other neurological symptoms. Brainstem lesions limited to the inferior colliculus have been reported, most of them bilateral [Jani et al, 1991;Hu et al, 1997;Johkura et al, 1998;Vitte et al, 2002;Hoistad and Hain, 2003;Kimiskidis et al, 2004], resulting in bilateral sensorineural hearing loss or auditory agnosia with normal or abnormal BAEPs.…”