Disease relevance of Evoked Potentials, Auditory

• Brainstem auditory evoked responses (BAERs) were recorded from 202 patients with definite, probable, or possible multiple sclerosis (MS) [1].
• To evaluate the impact of mild hypoglycemia on CNS function in healthy adults, we measured brain stem auditory evoked potentials and P300 potentials (elicited by cognitive processing of auditory stimuli) during hypoglycemic or euglycemic insulin clamps (80 mU.m-2.min-1) [2].
• METHODS: Serial recordings of the primary cortical auditory evoked potential (PCAEP) were made from 20 adult male albino rats starting immediately after the induction of generalized seizure activity by ECS [3].
• Extracellular glutamate (Glu), cerebral blood flow (CBF), and auditory-evoked potentials (AEPs) were measured concurrently using microdialysis and hydrogen clearance in the auditory cortex of anesthetized cats during global ischemia of various severities [4].
• Early auditory evoked potentials and electroencephalograms were recorded in 10 rabbits during hypoxic hypoxia (5% O2 in N2 gas mixture) and after reoxygenation [5].

Psychiatry related information on Evoked Potentials, Auditory

• Diminished suppression of the P50 auditory evoked potential in bipolar disorder subjects with a history of psychosis [6].
• One hundred and six HIV-positive drug users were tested with a two-tone auditory evoked potential (AEP) task and a small battery of neuropsychological tests, to examine the relationship between the latency of the P300 component (P3) of the AEP, intellectual function, mood and drug use [7].
• The bispectral index (BIS) and the auditory evoked potential (AEP) index as calculated by the new A-line monitor were measured during hypnosis with propofol, which included an episode of wakefulness [8].
• The relation between lorazepam-induced auditory amnesia and auditory evoked potentials [9].
• Brain stem auditory evoked potentials (BAEPs) measured at PND 300-310 showed significant increases in auditory thresholds in the low frequency range between Aroclor 1254 and 4-OH-CB107 (5 mg/kg bw) treated animals [10].

High impact information on Evoked Potentials, Auditory

• A deficit in inhibitory gating of auditory evoked responses was examined in 15 schizophrenic patients, their first-degree relatives, and normal subjects, using a conditioning-testing paradigm with the P50 wave of the auditory evoked response [11].
• CONCLUSIONS: Objective cognitive P300 auditory evoked potential measurements indicate that cognitive brain function is significantly impaired in patients suffering from stable end-stage heart failure [12].
• Mice lacking NeuroD protein exhibit no auditory evoked potentials, reflecting a profound deafness [13].
• Brainstem auditory evoked responses and alpha-pattern coma [14].
• Brainstem auditory evoked response in adrenoleukodystrophy [15].

Chemical compound and disease context of Evoked Potentials, Auditory

• Brain stem auditory evoked potentials and myelin changes in triethyltin-induced edema in young adult rats [16].
• We have observed the effect of intubation and incision, as measured by the auditory evoked response (AER) and haemodynamic variables, in 12 patients undergoing hernia repair or varicose vein surgery who received remifentanil as part of either an inhaled anaesthetic technique using isoflurane or as part of a total i.v. technique using propofol [17].
• Motor signs of wakefulness during general anaesthesia with propofol, isoflurane and flunitrazepam/fentanyl and midlatency auditory evoked potentials [18].
• Development of vestibular and auditory function: effects of hypothyroidism and thyroxine replacement therapy on nystagmus and auditory evoked potentials in the pigmented rat [19].
• Both xylenes and styrene caused marked hearing loss as assessed by behavioral (conditioned avoidance) and electrophysiologic (brainstem auditory-evoked response) methods [20].

Biological context of Evoked Potentials, Auditory

• Diminished suppression of the P50 auditory evoked potential is a phenotype used in studies of genetic susceptibility in schizophrenia [6].
• In acute animals, when parenteral CsA (10 mg/kg or 25 mg/kg) was administered intravenously (CsA blood level 2000-22,000 ng/ml), slight but significant time-dependent decreases in cerebral blood flow (CBF), prolongation of absolute latencies of somatosensory-evoked potential (SSEP), and brainstem auditory-evoked responses (BAER) were noted [21].
• Biochemical, molecular, and genetic studies of one such endophenotype, the P50 auditory-evoked potential gating deficit, suggest that one of the neuronal nicotinic receptors, the alpha 7 nicotinic receptor, may function in an inhibitory neuronal pathway involved in this phenotype [22].
• Amplitudes of cortical visual evoked potentials (VEP, check size 8' and 33'), cortical long latency auditory evoked potential (AEP NIP1; 40, 55 and 70 dB SL tones) and brainstem auditory evoked potential (BAEP wave IV-V; 40, 55 and 65 dB SL clicks) were recorded and analysed in a blind and balanced design [23].
• The combined monitoring of brain stem auditory evoked potentials and intracranial pressure in coma. A study of 57 patients [24].

Anatomical context of Evoked Potentials, Auditory

• The present study examined electroencephalograms (EEGs) and auditory-evoked potentials (AEPs) in freely moving TN-R-/- and wild-type control mice, focusing on the hippocampal CA1 field and cerebral cortex [25].
• We have developed a unique computer model of the CA3 region of the hippocampus that simulates the P50 auditory evoked potential response to repeated stimuli in order to study the neuronal circuits involved in a sensory processing deficit associated with schizophrenia [26].
• CONCLUSIONS: The dose dependence of isoflurane effects on GABA(A) sIPSCs in pyramidal cells is consistent with effects on auditory evoked response in vivo [27].
• Selective lesions of the basal forebrain corticopetal cholinergic projection, by intrabasalis infusions of 192 IgG saporin, delayed and reduced the amplitude of the P70 component, and blocked the potentiating effects of epinephrine on the auditory evoked response [28].
• These findings suggest that ephedrine can cause excitation of the central nervous system during light general anaesthesia, and that auditory-evoked potentials may be a sensitive indicator of the depth of anaesthesia [29].

Associations of Evoked Potentials, Auditory with chemical compounds

• This study examined the effects of ondansetron, a highly selective 5-HT3 antagonist, on the P50 auditory evoked potential [30].
• Effects of lithium on auditory evoked potentials in healthy subjects [31].
• Phenytoin prolongs far-field somatosensory and auditory evoked potential interpeak latencies [32].
• Modulation of the gating of auditory evoked potentials by norepinephrine: pharmacological evidence obtained using a selective neurotoxin [33].
• Deteriorations of electrophysiological activity (middle latency auditory-evoked potentials, P < 0.04; Pa peak latencies, P < 0.05; Pa-V interpeak latencies, P = 0.08) and neuropsychological skills (Stroop test, P < 0.05; trail making, P = 0.12) were more pronounced the higher the insulin level, but at similar blood glucose concentrations [34].

Gene context of Evoked Potentials, Auditory

• Our aim was to find whether the gradual accumulation of Abeta in these mice can be detected with long-term recording of auditory-evoked potentials [35].
• This was unexpected, as previous studies using the brainstem auditory evoked response method suggested that the mdx mouse has an increased threshold for hearing [36].
• METHODS--Brain stem auditory evoked responses (BAERs) were measured in patients with CTMX and CMT1A [37].
• Changes in late auditory evoked potentials induced by corticotropin-releasing hormone and corticotropin fragment 4-9 in male controls [38].
• Morphological abnormalities of the mid-latency auditory evoked responses (MLAERs; P50, N100, P200), on the other hand, received very little attention [39].

Analytical, diagnostic and therapeutic context of Evoked Potentials, Auditory

• These values of the brain stem auditory-evoked response improved significantly during phototherapy and correlated significantly with the declining bilirubin levels [40].
• Dissociation of endogenous components of auditory evoked potentials following carbachol microinjection into the cholinoceptive pontine inhibitory area [41].
• The effect of etomidate on the auditory evoked response was examined in a double-blind study carried out before the start of surgery [42].
• We have investigated the relationship between changes in the middle latency auditory evoked potentials during alternating periods of consciousness and unconsciousness produced by propofol infusion combined with spinal anaesthesia for total knee replacement [43].
• Neuromuscular block with vecuronium reduces the rapidly extracted auditory evoked potentials index during steady state anesthesia [44].

References