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Biomedical subjects

D E Theobald

Publications and source records attributed to D E Theobald.

8 recordsLinked to original sources
PubMed1984

Pattern reversal evoked potentials in psychiatric patients.

Elicitation of pattern reversal evoked potentials (PREPs) was added to routine clinical EEG examinations in 100 consecutive adult psychiatric admissions. Latencies and correlations between the peaks and troughs of the triphasic complex were examined with particular reference to current hypotheses about neurophysiologic dysfunctions in schizophrenia and other psychiatric illnesses. PREP data also were examined in relation to age, sex, handedness, concurrent medications, and the clinical EEG findings. The results obtained indicated that age, sex, handedness, neuroleptic and anticholinergic medications and underlying EEG characteristics exert minimal influences upon the PREP. Schizophrenics showed lower hemispheric correlations and greater response stability than did patients with other diagnoses. No lateralized differences in relation to diagnosis were identified.

Adult↗
PubMed1979

Temperature biofeedback and relaxation training in the treatment of migraine headaches. One-year follow-up.

In a previous controlled group outcome study, a comparison of temperature biofeedback with progressive relaxation indicated that relaxation training was more effective in reducing migraine headache activity at the end of treatment. However, follow-up data obtained at 1, 2, and 3 months after the completion of treatment showed no difference between the two groups on any dependent measure. In the current study, 18 of 26 subjects who completed treatment in the original investigation collected headache data and completed a headache questionnaire 1 year subsequent to the conclusion of treatment in order to evaluate the long-term effectiveness of the two treatments. The results indicated that gains achieved in the reduction of headaches during both treatments were maintained at a 1-year follow-up. With the exception of medication consumption (for which relaxation training led to better long-term results) the 1-year follow-up data reveal no differential efficacy for temperature biofeedback or progressive relaxation in treating migraine headaches.

Autogenic Training↗
PubMed1978

Temperature biofeedback in the treatment of migraine headaches: a controlled evaluation.

After an initial four-week baseline phase, during which daily records of headache frequency and intensity and daily medication records were kept, 30 patients with frequent (at least one per month) migraine headaches were randomly assigned to three conditions: (1) temperature biofeedback, autogenic training, and regular home practice; (2) progressive relaxation with regular home practice; and (3) a waiting-list control condition. Comparisons of headache data from the four weeks of baseline and last two weeks of treatment showed that both the relaxation and biofeedback groups improved significantly on total headache activity, duration of headaches, and peak headache intensity and reduced consumption of analgesic medication, while the waiting list control group did not. All three groups showed significant decreases in headache frequency. Although the relaxation training was more effective than biofeedback training at the last week of treatment, follow-up data at one, two, and three months showed no differences between the two treated groups on any dependent measure.

Adult↗
PubMed1978

Manual guidance used in a punishment procedure: the active ingredient in overcorrection.

Simple manual hand and arm guidance used in the context of a punishment paradigm can be effective in suppressing the frequency of self-injurious behaviour in severely retarded individuals. The procedure involves a socially more acceptable consequence for self-injurious behaviour than many other treatment approaches; it is quite economical and easy to administer; and, the procedure appears to produce fairly rapid suppression of response rates. Brief periods of manual guidance following self-injurious behaviour may indeed be the most efficacious intervention for use in on-going treatment programmes. Questions relating to the generalisation of effects and the effects of verbal prompts and other behavioural prompts remain for future research.

Adult↗