Disease relevance of Evoked Potentials, Somatosensory

• Pain-related somatosensory evoked potentials following CO2 laser stimulation (pain SEPs) and conventional electrically-stimulated SEPs (electric SEPs) were examined in 8 patients with syringomyelia who showed various forms of dissociated sensory loss [1].
• Effects of dopamine on cortical blood flow and somatosensory evoked potentials in the acute stages of cerebral ischemia [2].
• We have shown that the induction of air embolism and transient hypertension in canines produces deterioration despite hyperbaric treatment, and we decided to test the effect of lidocaine on somatosensory evoked potential recovery and cerebral blood flow in this model [3].
• We, therefore, compared the recovery of CO2 reactivity with that of somatosensory evoked potentials, functional flow activation and neurologic deficits in a rodent model of cardiac arrest-induced cerebral ischemia, followed by up to 7 days of reperfusion [4].
• Effects of isoflurane and desflurane on neurogenic motor- and somatosensory-evoked potential monitoring for scoliosis surgery [5].

Psychiatry related information on Evoked Potentials, Somatosensory

• Abnormalities of somatosensory evoked potentials in the quinolinic acid model of Huntington's disease: evidence that basal ganglia modulate sensory cortical input [6].
• The purpose was to determine whether obsessive-compulsive disorder (OC) is associated with a distinctive pattern of somatosensory evoked potential (SEP) measurements, based on amplitudes of the N60 (negativity 60 msec poststimulus), P90, and N130 peaks [7].
• CONCLUSIONS: These findings suggest that fluoxetine is effective treatment for premature ejaculation probably due to its effect of increasing the penile sensory threshold, without changing the amplitudes and latencies of sacral evoked response and cortical somatosensory evoked potential [8].
• Sensory funneling of liminal multiple- point air-puff stimulation produces dramatic reduction in reaction time but relatively invariant P300 somatosensory evoked potential [9].
• Pain-related somatosensory evoked potentials (pain SEPs) and the pain threshold were evaluated following CO2 laser stimulation in 17 normal subjects [10].

High impact information on Evoked Potentials, Somatosensory

• Changes in HE stage, in Glasgow coma scale, and in somatosensory evoked potentials were measured [11].
• One of the very early neurophysiological signs in HD is a diminution of amplitude of early somatosensory evoked potentials (SEPs) recorded over the parietal cortex [6].
• Biochemical measures of vitamin E status were not consistently associated with either normal or abnormal visual, brainstem auditory or somatosensory evoked potentials or a combination of evoked potential abnormalities, and an abnormality of one evoked potential type was not associated with an abnormality of any other [12].
• We studied median and ulnar nerve somatosensory evoked potentials (SEPs) in 10 patients who had dystonia involving at least one upper limb (six had generalized, two had segmental and two had focal dystonia) and in 10 normal subjects [13].
• Influence of somatosensory input on paroxysmal activity in benign rolandic epilepsy with 'extreme somatosensory evoked potentials' [14].

Chemical compound and disease context of Evoked Potentials, Somatosensory

• We measured cerebral blood flow and somatosensory evoked potentials during transient focal cerebral ischemia in cats to compare the effects of four commonly used anesthetic regimens: ketamine/fentanyl/N2O (fentanyl), pentobarbital, ketamine/alpha-chloralose (alpha-chloralose), and ketamine/halothane/N2O (halothane) [15].
• Favourable outcome of a brain trauma patient despite bilateral loss of cortical somatosensory evoked potential during thiopental sedation [16].
• Infusion of the glycolytic nutrients xylitol and fructose increased blood glucose and lactate concentrations, and resulted in increased lactate accumulation in the spinal cord during ischemia and resulted in a significantly poorer recovery of the spinal somatosensory evoked potential than infusion of saline [17].
• The glycine antagonist GV150526 protects somatosensory evoked potentials and reduces the infarct area in the MCAo model of focal ischemia in the rat [18].
• This study investigated the effect of verapamil, a calcium antagonist drug, on brainstem auditory, visual, and somatosensory evoked potentials in multiple sclerosis patients [19].

Biological context of Evoked Potentials, Somatosensory

• Pattern visual evoked potentials (VEP), brain stem auditory evoked potentials (BAEP), and somatosensory evoked potentials (SEP; after the stimulation of both median and tibial nerves) were recorded in all subjects, and metabolic control was evaluated in terms of glycemia and glycosylated hemoglobin [20].
• OBJECTIVE: To monitor the effects of dietary treatment in adult-onset adrenoleukodystrophy (ALD) by means of somatosensory evoked potentials (SEPs) and motor evoked potentials (MEPs) [21].
• In contrast, somatosensory evoked potentials, eye-movement recordings, and MRI of the head and cervical cord provided results highly suggestive of FRDA in both patients [22].
• METHODS: Serial recording of brainstem auditory-evoked potentials and somatosensory-evoked potentials between days 1 and 21 after trauma [23].
• We sought to determine the possible neural conduction blockade of tramadol and whether there is evidence of localized neural toxicity with spinal somatosensory evoked potential (SSEP) measurements [24].

Anatomical context of Evoked Potentials, Somatosensory

• In most rats during clinical episodes the cerebral somatosensory evoked potential was reduced in amplitude and prolonged in latency, which can be accounted for by demyelination and axonal degeneration in the CNS and PNS components of the afferent pathway [25].
• Visual, brainstem auditory, and median nerve somatosensory evoked potential (EP) tests were performed annually during a 3-year, double-blind, placebo-controlled study of azathioprine with or without steroids in chronic progressive MS [26].
• We evaluated vertex-parietal P37, N50, and contralateral N37 somatosensory evoked potentials (SEPs) to posterior tibial nerve stimulation during weak (20 to 30%) and strong (80 to 90%) ipsilateral gastrocnemius-soleus contraction [27].
• The present study investigates the effects of the 5-hydroxytryptamine1A agonist ipsapirone on electroencephalography and somatosensory evoked potentials after middle cerebral artery occlusion in the rat [28].
• Effect of treatment with 21-aminosteroid U-74389G and glucocorticoid steroid methylprednisolone on somatosensory evoked potentials in rat spinal cord during mild compression [29].

Associations of Evoked Potentials, Somatosensory with chemical compounds

• We evaluated the effects of different stable end-tidal concentrations of isoflurane, enflurane, or halothane on short-latency somatosensory evoked potentials recorded during general anesthesia [30].
• Although the amplitude of the initial somatosensory evoked potential wave complex was highest in the alpha-chloralose group (58.6 +/- 16.5 microV) and smallest in the halothane group (27.5 +/- 5.7 microV), amplitude fell by 75% in all groups upon occlusion [15].
• Time course of frontal somatosensory evoked potentials. Relation to L-dopa plasma levels and motor performance in PD [31].
• The 5-HT perfusions were associated with an almost 20% narrowing of small pial arteries and arterioles but no significant effect on regional cerebral blood flow (rCBF), cortical water content or cortical function as monitored by EEG and somatosensory evoked potentials (SEP) [32].
• Recovery of somatosensory evoked potential amplitude was greater with tirilazad (49 +/- 3%) than vehicle (33 +/- 6%) [33].

Gene context of Evoked Potentials, Somatosensory

• METHODS: A 16-year-old boy with progressive Scheuermann's kyphosis measuring 80 degrees from T7 to T12 underwent an anteroposterior spinal fusion with somatosensory-evoked potential monitoring and wake-up tests [34].
• Neural generator of P14 far-field somatosensory evoked potential studied in a patient with a pontine lesion [35].
• Scalp recorded somatosensory evoked potentials (SEPs) elicited by left and right median nerve stimulation were obtained in 21 patients with Huntington's disease (HD), 14 individuals at risk (AR) for HD, and 21 non-patient controls matched for age and sex [36].
• This study attempted to replicate and extend earlier work that reported that the amplitude of the P200 peak of the human somatosensory evoked potential (SEP) can be increased and decreased when reward is made contingent upon change and that these changes are accompanied by alterations in pain sensitivity [37].
• In order to test the hypothesis that attention deficit hyperactivity disorder (ADHD) is related to deficits in somatosensory processing, 49 ADHD male children and 49 matched controls were tested on a wide range of tactile tasks, and somatosensory evoked potentials (SEP) were also recorded [38].

Analytical, diagnostic and therapeutic context of Evoked Potentials, Somatosensory

• Compared with seven untreated control dogs, allopurinol pretreatment significantly improved recovery of somatosensory evoked potentials after 4 hours of reperfusion [39].
• Effects of intravenous infusion of dopamine on local cortical blood flow (CBF) and somatosensory evoked potentials (SEP) was evaluated using canine cerebral ischemia, which was produced by middle cerebral artery occlusion [2].
• The amplitude of the median nerve somatosensory evoked potential and cerebral blood flow measured with carbon-14-labeled iodoantipyrine autoradiography were used to assess effect of therapy [3].
• Electrical stimulation of the index and little fingers of the left hand in the context of a somatosensory target discrimination task, performed by healthy human subjects, elicited the middle-latency component of somatosensory evoked potentials, N60, the long-latency component, N140, and the P300 component [40].
• Remifentanil- and fentanyl-based anesthesia for intraoperative monitoring of somatosensory evoked potentials [41].

References