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Biomedical subjects

D M Ross

Publications and source records attributed to D M Ross.

At least 37 records · Page 2Linked to original sources
PubMed1978

Test of the generality of Bobrow and Bower's comprehension hypothesis.

In a test of the generality of the comprehension hypothesis, EMR children were assigned, following pretraining measures, to experimental(n = 24) and control (n = 12) conditions. The experimental group was given intensive training with both self-generated and supplied links, while the control group participated in the same training format but without mediational instruction. Posttraining measures strongly supported the applicability of the comprehension hypothesis to the associative learning of EMR children. Superior associative learning and greater comprehension occurred under generate as compared to supplied conditions.

Association Learning↗
PubMed1978

Facilitative effect of mnemonic strategies on multiple-associate learning in EMR children.

The efficacy of mnemonic strategy training for multiple-associate learning was examined. Following pretraining measures of multiple-associate learning and general memory skills, 33 young EMR children were randomly assigned to one of three conditions: imagery, rote repetition, or control. Each group participated in a story and game program for 5 hours over a 2-week period, which, depending on condition, involved intensive training in the use of either imagery or rote repetition or no direct mnemonic training. Posttraining measures of children who received mnemonic training showed marked improvement, with imagery being superior (p less than .01) to rote repetition.

Association Learning↗
PubMed1978

Cognitive training for EMR children: choosing the best alternative.

Twenty-eight EMR children participated in an 8-week training program on choosing the best alternative. The training was presented within the context of small-group discussions of familiar social problems and participation in table games. A control group (n = 28) engaged in similar activities but without specific cognitive training. The experimental group's posttest scores were far superior (p is less than .001) to those of the control group, an finding that suggests a major experiential component in the deficit in problem-solving skills typical of EMR children and provides strong support for the efficacy of early intensive cognitive training.

Child↗
PubMed1977

The surgical correction of congenital elevation of the scapula. A review of seventy-seven cases.

Of 77 cases of surgically treated congenital high scapula, the procedure was scapular resection in 36, and scapula relocation in 41. Seventeen had a Woodward-type repair, 14 a Shrock procedure, four cases a Green repair and 6 cases had Petries modification of the Green repair. Follow-up was from two to 14 years with a mean of 11 years. Preoperatively, the mean of shoulder abduction was 90 degrees. Post-operatively, proximal resection increased shoulder abduction to 126 degrees but did not change scapular position. Scapular relocation increased abduction to a mean of 134 degrees and shoulder position was altered from a mean of 1.8 inches of elevation as compared to the normal side, to a mean of 0.5 inches of residual elevation. Significant loss of initial correction occurred in 14 out of 36 cases of proximal resection and 9 of 41 patients with scapular relocation.

Child↗
PubMed1970

Combined axillary plexus block and basal sedation for cardiac catheterization in young children.

A technique for the management of cardiac catheterization in children is described which combines axillary plexus block with basal sedation. The technique offers a quiet still arm with pronounced vasodilatation, permitting the use of larger catheters than usual, making sampling easier, and giving undamped pressure records. These factors, together with the absence of venospasm, make catheterization of an arm vein in young chīldren a feasible proposition; in addition arterial sampling via the brachial artery may be performed without further inconvenience to the child.

Anesthesia, Conduction↗
PubMed1967

Swimming sea anemones of Puget Sound: swimming of Actinostola new species in response to Stomphia coccinea.

Swimming as a response of the sea anemone Actinostola new species can be elicited as a result of contact with the submarginal surface of another swimming sea anemone Stomphia coccinea. However, Stomphia does not swim as a result of contact with Actinostola. In all other known respects, swimming is caused in both species by the same stimuli, including certain starfishes, a nudibranch, and electrical stimuli. No agent that causes Actinostola to swim has been detected in extracts, rubbings, or dried matter from Stomphia.

Animals↗
PubMedDate not supplied

Effect of ethanol on folate binding by isolated rat renal brush border membranes.

Deficiency of folic acid, an essential vitamin involved in critical metabolic pathways, occurs in several conditions, including alcoholism. In humans and animal models, chronic ethanol consumption leads to decreased plasma levels and increased urinary levels of folate. An isolated perfused rat kidney model has shown that ethanol produces increased urinary excretion of folate, suggesting a direct effect of ethanol on the kidney. Because the folate binding protein, located in the brush border membrane (BBM) of proximal tubule cells, is thought to be involved in renal folate reabsorption, the effects of ethanol on BBM binding of folate were assessed. Binding studies were conducted using isolated rat kidney cortex BBM preparations, incubated with 3H-labeled 5-methyltetrahydrofolate (5-CH3H4PteGlu) at varying concentrations (0.1-100 nM). Ethanol at 500 mg/dl did not significantly affect [3H]5-CH3H4PteGlu binding in BBM. The structural analogue, folic acid, decreased [3H]5-CH3H4PteGlu binding under similar conditions. Because of the lack of effect of ethanol on binding to isolated BBM, the effects of ethanol probably occur at other steps in the renal uptake and metabolism of folate.

Animals↗