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Biomedical subjects

J K Nelson

Publications and source records attributed to J K Nelson.

9 recordsLinked to original sources
PubMed1979

Effects of background music on musical task performance and subsequent music preference.

The present study examined the effects of background music on performance of a musical task and on subsequent preference for that music. 60 music and 60 non-music majors heard background music in music-only or music-plus-task conditions, and a third group heard no music in a task-only condition. A preference test of four musical excerpts, including the background [corrected] music excerpt, was administered subsequently to all three groups of subjects. Although music majors scored higher than non-majors, background music did not differentially affect task scores. Music students exhibited a differential preference following both musical conditions, while non-music subjects demonstrated differential preference only following the music-only condition.

Achievement↗
PubMed1978

Comparative trial of atenolol and propranolol in hyperthyroidism.

1 The use of atenolol, a cardioselective beta-adrenoceptor antagonist, in the management of hyperthyroidism has been studied by comparing it with propranolol. 2 In a double-blind cross-over trial, atenolol (50 mg), propranolol (40 mg) and placebo 4 times daily for 1 week were compared in twenty-one hyperthyroid patients by sequential analysis. 3. Patients generally preferred atenolol or propranolol to placebo but this preference only achieved significance with propranolol. 4 Judged by their effect on the symptoms and signs of hyperthyroidism, both atenolol and propranolol were significantly better than placebo, but no distinction could be made between the two active compounds. 5 Atenolol and propranolol reduced mean heart rate by 29.8 and 27.1% respectively compared with placebo. 6 Atenolol appeared almost equally effective to propranolol in the management of the peripheral manifestations of hyperthyroidism.

Atenolol↗
PubMed1975

Comparative trial of propranolol and practolol in hyperthyroidism.

The possible role of practolol in the management of hyperthyroidism has been studied by comparing it with propranolol. 2. In a double-blind cross-over trial, propranolol (40 mg), practolol (120 mg) and a placebo four times daily for one week were compared in twenty-one hyperthyroid patients by sequential analysis. 3. Judged by their effect on the symptoms and signs of thyrotoxicosis, both propranolol and practolol were significantly better than the placebo but no clear distinction could be made between the two active compounds. 4. Propranolol and practolol reduced heart rate by 24 and 17% respectively compared with placebo. 5. Patients generally preferred propranolol or practolol to placebo but this preference did not achieve significance with either drug. 6. Only in its effect on heart rate was practolol significantly inferior to propranolol, and it would appear to be a useful alternative to propranolol in the management of the peripheral manifestations of hyperthyroidism.

Clinical Trials as Topic↗