| 1. |
- Widerström, E G, et al.
(författare)
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Relations between experimentally induced tooth pain threshold changes, psychometrics and clinical pain relief following TENS. A retrospective study in patients with long-lasting pain.
- 1992
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Ingår i: Pain. - 0304-3959. ; 51:3, s. 281-7
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Tidskriftsartikel (refereegranskat)abstract
- The present study investigates the relationships between clinical pain relief, physiological and psychological parameters. Out of 50 patients with long-lasting musculoskeletal neck- and shoulder-pain treated with transcutaneous electrical nerve stimulation (TENS), 21 were selected and classified as responders (n = 13) or non-responders (n = 8). Tooth pain thresholds (PT) were measured before and after an experimental TENS treatment and the relative change in PT following the stimulation was calculated. Three psychometric self-inventories were administered: Zung Depression Scale, Spielberger's Trait Anxiety Scale and the Multidimensional Health Locus of Control Scale. Responders (R) and non-responders (NR) differed significantly from each other in the PT measurements as well as on the psychometric scales. NR exhibited higher levels of anxiety and depression, a more pronounced powerful other orientation and no change or a decrease in PT following TENS compared to R. These findings indicate relationships and interactions between physiological and psychological factors in patients with long-lasting pain.
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| 2. |
- Carlsson, Sven G., 1935, et al.
(författare)
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The effect of amphetamine and L-dopa on tetrabenazine-induced suppression of intracranial self-stimulation in the rat.
- 1977
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Ingår i: Scandinavian journal of psychology. - 0036-5564. ; 18:2, s. 157-60
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Tidskriftsartikel (refereegranskat)abstract
- The administration of d-amphetamine sulphate resulted in a restoration of intracranial self-stimulation (ICSS) suppressed by tetrabenazine (TBZ). A dose-dependent increase in the rate of ICSS was seen after L-dopa in animals pretreated with TBZ. d-Amhetamine is believed to act by facilitating the nerve-impulse induced release of central catecholamines (CA) whereas the blockage of the granular uptake-storage mechanism by TBZ will prevent the storage of CA formed from the administrated L-dopa and thereby interfere with their release by nerve-impulses. Thus, in the latter case, an activation of central CA receptors in all probability will be due to a dose-dependent diffusion of CA from nerve terminals. It is suggested that the failure to completely antagonize the TBZ-induced suppression of behaviour by L-dopa is due to the fact that a direct activation, independent of the nerve-impulse flow, of central CA receptors easily results in an overstimulation and a reduced specificity in behaviour.
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| 3. |
- Dahlström, Lars, et al.
(författare)
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Clinical and electromyographic effects of biofeedback training in mandibular dysfunction.
- 1984
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Ingår i: Biofeedback and self-regulation. - 0363-3586. ; 9:1, s. 37-47
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Tidskriftsartikel (refereegranskat)abstract
- Twenty patients with mandibular dysfunction, 10 acute and 10 chronic, were trained with electromyographic biofeedback from either m. masseter or m. frontalis area. The electromyographic activity in both muscle areas were recorded during six training sessions. The mean electromyographic activity decreased significantly within the sessions for both muscle areas, progressively more often for the m. masseter area. The activity did not decrease significantly between sessions for any muscle area. The clinical and subjective symptoms of mandibular dysfunction improved significantly after the training. No differences, electromyographically or clinically, among acute, chronic, m. masseter area, or m. frontalis area feedback patients could be observed. No correlation between decrease in electromyographic activity and symptoms could be established. Since a simplistic neuromuscular learning model for biofeedback training gains little support from these results, alternative views are discussed.
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| 4. |
- Dahlström, Lars, et al.
(författare)
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Comparison of effects of electromyographic biofeedback and occlusal splint therapy on mandibular dysfunction.
- 1982
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Ingår i: Scandinavian journal of dental research. - 0029-845X. ; 90:2, s. 151-6
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Tidskriftsartikel (refereegranskat)abstract
- In order to evaluate and compare the effects of biofeedback and occlusal splint therapy on mandibular dysfunction, 30 patients were randomly divided into two treatment groups. The patients were women aged 20--40 years without any obvious organic reasons for their symptoms. There were no significant differences between the two groups before the start of treatment in respect of signs and symptoms of mandibular dysfunction. One group used full coverage splints at night for 6 weeks. The other group received biofeedback training up to six times, 30 min per session. One month after completion of the therapy the patients were re-examined. Both groups showed a significant reduction in symptoms, both subjectively and clinically. No significant differences between the groups were found. The two treatments were thus equally effective in the short-term perspective in patients with signs and symptoms of mandibular dysfunction.
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| 5. |
- Dahlström, Lars, et al.
(författare)
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Stress-induced muscular activity in mandibular dysfunction: effects of biofeedback training.
- 1985
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Ingår i: Journal of behavioral medicine. - 0160-7715. ; 8:2, s. 191-200
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Tidskriftsartikel (refereegranskat)abstract
- Surface electromyographic (EMG) recordings from the left and right masseteric areas during physical and psychological induced stress were obtained from 20 patients with mandibular dysfunction and 20 healthy controls. Integrated electromyographic activity was not significantly different for the two sides but was higher for patients than for controls during both stress and relaxation. Anxiety level, as measured with the Taylor Manifest Anxiety Scale, was higher for patients. Biofeedback treatment for the patients resulted in significantly reduced signs and symptoms of mandibular dysfunction. When the test procedures were repeated, the controls had not changed in their electromyographic responses during stress, whereas the patients showed a significant decrease in this respect. The results obtained are discussed in terms of a systems-oriented etiological concept.
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| 6. |
- Dahlström, Lars, et al.
(författare)
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Variability in electromyographic surface recordings of the human masseter muscle.
- 1989
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Ingår i: Electromyography and clinical neurophysiology. - 0301-150X. ; 29:2, s. 105-8
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Tidskriftsartikel (refereegranskat)abstract
- Serial registrations of integrated unilateral surface masseter EMG were performed in eight healthy subjects in the rest position, during controlled gentle biting and during maximal clenching at five different sessions in order to analyse the variability. The recording conditions were standardised. The EMG activity for the group did not differ significantly between the sessions at any level but individual variations were great in the rest position both within and between days. Good consistency was found at controlled force levels. Temporally stable measurements of masseter activity which permit quantitative comparisons thus seem possible.
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| 7. |
- Dyrehag, L E, et al.
(författare)
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Effects of repeated sensory stimulation sessions (electro-acupuncture) on skin temperature in chronic pain patients.
- 1997
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Ingår i: Scandinavian journal of rehabilitation medicine. - 0036-5505. ; 29:4, s. 243-50
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Tidskriftsartikel (refereegranskat)abstract
- Changes in skin temperature and haemodynamics were studied during experimentally administered electro-acupuncture before and after a 4-week period of electro-acupuncture (EA) treatments. Subjective pain intensity was evaluated using a pain questionnaire. Twelve patients with long-lasting nociceptive pain were included. Before clinical treatment, skin temperature tended to decrease after 30 minutes' stimulation. In contrast, a significant increase was seen after the clinical treatment. No significant changes were seen for blood pressure, heart rate or pain intensity before and after the clinical treatment. The data indicate that an increased skin vasoconstrictor sympathetic activity may be responsible for the decreased skin temperature during the electro-acupuncture in the initial test sessions, whereas an inhibition of skin sympathetic activity and/or a release of vasodilatory substances may be responsible for the increase in temperature after completed clinical treatment. Despite a small number of subjects and correction for multiple inference, the difference in temperature effects before and up to 3 months after acupuncture treatment was significant.
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| 8. |
- Dyrehag, L E, et al.
(författare)
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Relations between self-rated musculoskeletal symptoms and signs and psychological distress in chronic neck and shoulder pain.
- 1998
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Ingår i: Scandinavian journal of rehabilitation medicine. - 0036-5505. ; 30:4, s. 235-42
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Tidskriftsartikel (refereegranskat)abstract
- The purposes of the present study were to describe physical and psychological characteristics of 55 chronic pain patients with predominantly nociceptive neck and shoulder complaints, and to explore relationships between physical assessment methods, self-reported pain and psychological distress. The physical measures included cervical and shoulder mobility and muscle tenderness. The Pain Severity and Interference subscales from the Multidimensional Pain Inventory (MPI), Becks Depression Inventory (BDI), State-Trait Anxiety Inventory (STAI-Y), and a pain drawing assessed self-reports of pain and psychological distress. The number of tender points (TP score) correlated significantly with pain severity, (p < 0.01) Interference (p < 0.05), pain drawing score (p < 0.05), BDI (p < 0.05) and state anxiety (p < 0.05). No significant correlation was seen between TP score and age, pain duration or trait anxiety. The results suggest that there are relationships between observers' ratings of muscle tenderness (TP score) and self-reports of pain severity, interference of pain and psychological distress in patients with chronic cervico-brachial pain.
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| 9. |
- Abrahamsson, Kajsa H., 1956, et al.
(författare)
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Ambivalence in Coping with Dental Fear and Avoidance: A Qualitative Study
- 2002
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Ingår i: Journal of Health Psychology. - : SAGE Publications. - 1359-1053 .- 1461-7277. ; 7:6, s. 653-664
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Tidskriftsartikel (refereegranskat)abstract
- Dental phobia is a widespread problem, which can have significant impact on the individual's health and daily life. This grounded theory study aims to explore the situation of dental phobic patients: how dental phobia interferes with their normal routines and functioning, social activities and relationships, what factors contribute to the maintenance of dental fear and how they cope with their fear. In the qualitative analysis of thematized in-depth interviews four main categories were developed: threat to self-respect and well-being, avoidance, readiness to act and ambivalence in coping. The results show that several psychological and social factors interact in determining how dental phobic individuals cope with their fear, and demonstrate in what way dental fear affects their daily lives.
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| 10. |
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