Hilton Stowell

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Significant amplitude and temporal augmentation occurred in later time segments of human somatosensory evoked responses (60-700 ms) when percutaneous electrical pulse stimulation, delivered to finger, toe, or lip, indicated subjectively both crossing of a perceptual pain threshold and somatotopic movement associated with a noxious, qualitative change.(More)
  • H Stowell
  • 1984
Since 1960 systematic studies of the human scalp-conducted cerebral slow-wave response to painful stimulation have shown only amplitude augmentation of the vertex components of the somatosensory evoked potential (SEP) to be indicators of subjective perception of a noxious or aversive quality in the stimulus. The vertex potential (VP) of the SEP occurs(More)
  • H Stowell
  • 1984
Scalp-recorded somatosensory evoked potentials (SEPs) in humans and dogs suggest that it takes longer for peripheral information to reach the brain from the anogenital perineum than from the distal hind limbs, in spite of a shorter afferent pathway. The delay seems to be centrally determined, rostral to the lumbar segments, rather than by slower conduction(More)
  • H Stowell
  • 1984
Human somatosensory evoked potentials (SEP), especially those evoked by electrical stimulation of toothpulp and teeth or by laser thermal stimulation of skin, have attracted biomedical attention since 1975 as possible indicators of the quantity of acute pain being perceived by the subject. The dental variety has been claimed as an "objective correlate of(More)
  • H Stowell
  • 1990
Some studies of scalp-conducted human EEG show a positive correlation between the temporal coherence of prestimulus activity in the theta, alpha, and beta passbands, on the one hand, and both target probability and subjective self-report about good performance, on the other. There remains an important ambiguity in these data: Are these changes in temporal(More)
  • H Stowell
  • 1987
Hitherto the study of cerebral slow waves has been mainly empirical phenomenology, in spite of 50 years of effort to discover their origins and possible functions. Since 1970 the increasing use of both analog and digital filters, combined with more sensitive averaging techniques, has led to better understanding of some possible functional significance for(More)
  • H Stowell
  • 1985
In 1969 two authors proposed that human visual evoked potentials could be predictors of psychometrically scored "intelligence." This interpretation of their data was subsequently invalidated. In 1982 two other authors made a similar claim for auditory evoked potentials; their published methodology and general theoretical background in sensory(More)
Signal summation and minimally adapting tactile stimulation techniques permit the resolution of a critical time domain of the somatosensory evoked response, recorded from human scalp, which is sensitive to the stimulus variables represented by the sensations of tapping and pinprick respectively. The variation of this time-domain suggests the influence of(More)