Changes of Spontaneous Oscillatory Activity to Tonic Heat Pain
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چکیده
منابع مشابه
Changes of Spontaneous Oscillatory Activity to Tonic Heat Pain
Transient painful stimuli could induce suppression of alpha oscillatory activities and enhancement of gamma oscillatory activities that also could be greatly modulated by attention. Here, we attempted to characterize changes in cortical activities during tonic heat pain perception and investigated the influence of directed/distracted attention on these responses. We collected 5-minute long cont...
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Pain perception is closely related to the attentional level and the vigilance of the subject [4]. The intensity of a pain stimulus and its sensation do often not coincide. A common experimental example is the so-called pain-inhibiting-pain effect: A stressful stimulus, e.g. persistent or chronic pain, often elevates the threshold for brief pain stimuli applied during the same time. Stressful st...
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To confirm the existence of an ongoing electroencephalogram (EEG) pattern that is truly suggestive of pain, tonic heat pain was induced by small heat pulses at 1 °C above the pain threshold and compared to slightly less intense tonic non-painful heat pulses at 1 °C below the pain threshold. Twenty healthy subjects rated the sensation intensity during thermal stimulation. Possible confounding ef...
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It has been reported that oscillatory gamma activity participates in brief acute pain and tonic ongoing pain. It is of great interest to determine whether the gamma activity is involved in chronic pain since chronic pain is a more severe pathological condition characterized by pain persistency. To investigate the oscillatory gamma activity in chronic pain, in the present study, we recorded spon...
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ژورنال
عنوان ژورنال: PLoS ONE
سال: 2014
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0091052