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BACKGROUND Pregabalin has a broad spectrum of analgesic and antihyperalgesic activity in both basic and clinical studies. However, its mechanisms and sites of action have yet to be determined in humans. AIMS To assess the antinociceptive effect of pregabalin on experimental gut pain in patients with visceral hyperalgesia due to chronic pancreatitis and to(More)
Previous methods for visceral thermal stimulation have lacked control of the temperature rate and visual inspection of the organ. The aims of this study was to develop a method for linear control of heat stimulation in the human oesophagus combined with endoscopy, to assess the reproducibility of this method and to investigate sensitivity to thermal(More)
OBJECTIVE In patients with painful chronic pancreatitis (CP) there is increasing evidence of abnormal pain processing in the central nervous system. Using magnetic resonance (MR) diffusion tensor imaging, brain microstructure in areas involved in processing of visceral pain was characterised and these findings were correlated to clinical pain scores. (More)
BACKGROUND AND AIM Intractable pain usually dominates the clinical presentation of chronic pancreatitis (CP). Slowing of electroencephalogram (EEG) rhythmicity has been associated with abnormal cortical pain processing in other chronic pain disorders. The aim of this study was to investigate the spectral distribution of EEG rhythmicity in patients with CP.(More)
BACKGROUND & AIMS Patients with painful chronic pancreatitis (CP) might have abnormal brain function. We assessed cortical thickness in brain areas involved in visceral pain processing. METHODS We analyzed brain morphologies of 19 patients with painful CP and compared them with 15 healthy individuals (controls) by using a 3T magnetic resonance scanner. By(More)
BACKGROUND A major problem in pain medicine is the lack of knowledge about which treatment suits a specific patient. We tested the ability of quantitative sensory testing to predict the analgesic effect of pregabalin and placebo in patients with chronic pancreatitis. METHODS Sixty-four patients with painful chronic pancreatitis received pregabalin(More)
OBJECTIVE Alterations of the electroencephalogram (EEG) have been reported in patients with hepatic encephalopathy (HE). However, previous methods have not assessed transient phenomena in the EEG signal (dynamics) and associations to psychometric test performance have in general been poor. The aims were to quantify spectral and dynamic EEG abnormalities in(More)
OBJECTIVE Conditioning Pain Modulation (CPM) represents the various descending inhibitory mechanisms induced by a heterotopic noxious stimulation (previously termed DNIC). CPM-induced modulations in brain activity have not previously been investigated to visceral pain. Hence the aims were to assess the role of CPM in terms of: (1) psychophysics, (2)(More)
BACKGROUND AND AIM Hepatic encephalopathy (HE) is a severe and frequent complication of liver cirrhosis characterized by abnormal cerebral function. Little is known about the underlying neural mechanisms in HE and human data are sparse. Electrophysiological methods such as evoked brain potentials after somatic stimuli can be combined with inverse modeling(More)
OBJECTIVE This study aimed to investigate reliability of electroencephalography (EEG) during rest and tonic pain. Furthermore, changes in EEG between the two states as well as dynamics and relation to pain ratings were investigated. METHODS On two separate days EEG was recorded in 39 subjects during rest and tonic pain (cold pressor test: left hand held(More)