Characterizing Resting Brain Activity to Predict the Amplitude of Pain-Evoked Potentials in the Human Insula
0
Citation
0
Reference
20
Related Paper
Keywords:
Human brain
Cite
The article reports on the first study of the evoked activity of the brain in epileptic patients (n = 20) following sleep deprivation. An analysis of the data obtained has revealed a tendency to the shortening of the peak latent intervals of visual evoked potentials in the range of 100-200 mu sec and the V component and the interpeak interval III-V of evoked auditory trunk potentials in patients with temporal epilepsy. The phenomenon may indicate the elimination of stabilizing control involving the specific conductive pathways and, possibly, an accelerated conduction of a specific sensor signal.
Evoked potential
Sleep
Visual evoked potentials
Cite
Citations (0)
Stimulus (psychology)
Somatosensory evoked potential
Evoked potential
Cite
Citations (19)
At present, the specific neurophysiologic methodology of recording pain-related evoked potentials is considered a most promising approach to objectively quantify pain in man. This study was designed to characterise and evaluate the use of somatosensory evoked potentials to study nociception in a canine model. To this aim, somatosensory evoked potentials were evoked by intra-epidermal electrical stimulation and recorded from the scalp in 8 beagle dogs. Characteristics determined were: (1) the conduction velocities of the peripheral nerve fibres involved, (2) the stimulus intensity response characteristics and (3) the evaluation of possible disturbance of the signals by muscular activity from the hind paw withdrawal reflex (EMG artefact). The results showed (1) the conduction velocities to be in the A-delta fibre range (i.e. fibres involved in nociception), (2) an increase in amplitude and a decrease in latency of the evoked potential following increasing stimulus intensities and (3) the absence of EMG artefact in the signals. These data indicate that the evoked potentials recorded, are related to nociception and thus are suited to quantitatively characterise the perception of noxious stimuli making this model useful for pain- and analgesia-related research.
Somatosensory evoked potential
Cite
Citations (12)
Depression
Visual evoked potentials
Endogenous depression
Cite
Citations (1)
Acoustic stem evoked potentials (ASEP) and early components of somatosensory evoked potentials (SSEP) were studied in 36 patients with craniocerebral trauma and compared with those of normal individuals. The results demonstrate the advantages of using SSEP for appraising the patients' condition. This is manifested by the fact that the ASEP parameters do not correlate with the clinical data on the severity of the patients' condition (Glasgow scale) and the indices of the outcome scale, while, in contrast, the SSEP parameters are in good correlation with the clinical findings.
Somatosensory evoked potential
Glasgow Outcome Scale
Evoked potential
Craniocerebral trauma
Cite
Citations (0)
Cite
Citations (5)
Somatosensory evoked potential
Evoked potential
Magnetoencephalography
N100
Stimulus (psychology)
Cite
Citations (0)
Annals
Cite
Citations (59)
The evoked somatosensory potentials recorded from 24 patients with stroke are described. The changes seen in the evoked responses can be correlated with the clinical observations during the acute phase in most instances, although improvement in sensory perception is not accompanied by a parallel recovery of evoked potential amplitude. Cerebral diaschisis may be responsible for bilateral depression of evoked somatosensory potentials in the presence of unilateral infarct.
Somatosensory evoked potential
Evoked potential
Stroke
Diaschisis
Depression
Cortical Spreading Depression
Cite
Citations (47)