TY - JOUR
T1 - Intracranial recording from the brain-stem and the trigeminal nerve following upper lip stimulation
AU - Soustiel, J. F.
AU - Chistyakov, A. V.
AU - Hafner, H.
AU - Youssim, E.
AU - Feinsod, M.
PY - 1996/1
Y1 - 1996/1
N2 - Short latency evoked potentials following stimulation of the upper lip were recorded intracranially during neurosurgical procedures in 14 patients. In 10 patients, a suboccipital craniectomy provided direct access to the trigeminal root and the pens at the root entry zone. Direct recordings from the trigeminal root were characterized by a large triphasic potential at 2.4-2.7 msec. The latency of this potential increased as a result of moving the recording electrode proximally towards the brain-stem. The same potential could be recorded from the brain-stem surface at a latency suggesting an intra-axial presynaptic origin. A second component, N4.7, was recorded from over the most rostral aspect of the brain-stem in 3 patients and from the tentorium free edge in 4 patients. This potential of smaller amplitude did not show significant difference in latency or polarity at various electrode locations, suggesting a deep diencephalic origin remote from the recording electrode.
AB - Short latency evoked potentials following stimulation of the upper lip were recorded intracranially during neurosurgical procedures in 14 patients. In 10 patients, a suboccipital craniectomy provided direct access to the trigeminal root and the pens at the root entry zone. Direct recordings from the trigeminal root were characterized by a large triphasic potential at 2.4-2.7 msec. The latency of this potential increased as a result of moving the recording electrode proximally towards the brain-stem. The same potential could be recorded from the brain-stem surface at a latency suggesting an intra-axial presynaptic origin. A second component, N4.7, was recorded from over the most rostral aspect of the brain-stem in 3 patients and from the tentorium free edge in 4 patients. This potential of smaller amplitude did not show significant difference in latency or polarity at various electrode locations, suggesting a deep diencephalic origin remote from the recording electrode.
KW - Brain-stem evoked potentials
KW - Intracranial recording
KW - Trigeminal evoked potentials
KW - Upper lip stimulation
UR - http://www.scopus.com/inward/record.url?scp=0030066301&partnerID=8YFLogxK
U2 - 10.1016/0168-5597(95)00201-4
DO - 10.1016/0168-5597(95)00201-4
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C2 - 8964263
AN - SCOPUS:0030066301
SN - 0168-5597
VL - 100
SP - 51
EP - 54
JO - Electroencephalography and Clinical Neurophysiology - Evoked Potentials
JF - Electroencephalography and Clinical Neurophysiology - Evoked Potentials
IS - 1
ER -