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Biomedical subjects

C Bates

Publications and source records attributed to C Bates.

11 recordsLinked to original sources
PubMed1992

The perception of identity by 6 1/2-month-old infants.

In Study 1, sixteen 6 1/2-month-olds were habituated to a Reversible stimulus (an upright face that could be perceived as an entirely different upright face when it was rotated 180 degrees) and to a Nonreversible stimulus (a face that could be perceived as upright in only one orientation). Following habituation for each type of stimulus, test trials paired the habituated face with a novel stimulus (an inversion of the same face). For both Reversible and Nonreversible stimuli, the physical difference between the old and new test stimuli was the same (a 180 degrees rotation); however, infants devoted more visual attention to the 180 degrees rotation only when it was a Reversible face, suggesting that the identity change was detected. Experiment 2 ruled out the explanation that infants might have failed to dishabituate to the inversion of the Nonreversible stimulus because they could not remember it. Results are interpreted as evidence that 6 1/2-month-old infants are not limited to face recognition based on similarity in pattern arrangement alone, but are capable of processing faces at a representational level.

Attention↗
PubMed1991

Fatty acids in plasma phospholipids and cholesterol esters from identical twins concordant and discordant for schizophrenia.

The fatty acid compositions of plasma phospholipids and cholesterol esters were measured in 18 pairs of twins discordant for schizophrenia and 20 pairs concordant for schizophrenia. In the twins discordant for schizophrenia the only significant abnormalities were elevations of adrenic (22:4n-6) and docosapentaenoic (22:5n-6) acids in the schizophrenic twins. These fatty acids have also recently been reported to be elevated in brains from schizophrenics. The twins concordant for schizophrenia showed many differences from the normal discordant twins. 22:4n-6 and 22:5n-6 were even more abnormal than in the schizophrenic discordant twins. In addition, linoleic acid was significantly reduced, an abnormality which has been found consistently in other schizophrenic populations. These observations are consistent with the concept that unsaturated fat metabolism may be abnormal in schizophrenia.

Adult↗
PubMed1990

Minimal deviation adenocarcinoma (adenoma malignum) of the endocervix: a histochemical and immunohistochemical study of two cases.

The histopathological diagnosis of minimal deviation adenocarcinoma (adenoma malignum) of the endocervix may be difficult. Two cases of minimal deviation adenocarcinoma (MDA) were examined using mucin histochemistry and immunocytochemistry with antibodies to epithelial membrane antigens (HMFG1, Ep1), low-molecular-weight cytokeratins (CAM 5.2), carcinoembryonic antigen (CEA), and alpha-amylase. The results were compared with those for normal endocervical glands. Reactivity for CEA in MDA was focal and would be unreliable for biopsy diagnosis. Both cases of MDA contained abundant neutral mucins and sialomucins, whereas sulfomucins were rarely detected; this pattern contrasted with that of normal endocervix. Neoplastic glandular epithelial cells in MDA consistently showed both luminal and cytoplasmic reactivity with Ep1 and HMFG1, whereas normal cervix showed luminal labeling only. Thus, mucin histochemistry and immunohistochemical detection of epithelial membrane antigens may distinguish between extremely well differentiated neoplastic glands in MDA and normal endocervical glands, and hence may aid diagnosis in biopsy specimens.

Adenocarcinoma↗
PubMed1989

Essential fatty acids in plasma phospholipids in schizophrenics.

Blood samples were taken from schizophrenics and control patients in three different centers. The phospholipids were extracted from plasma and their fatty acid composition analyzed. Similar and consistent differences between schizophrenics and controls were observed at all three centers. The n-6 essential fatty acid levels were significantly reduced, whereas n-3 essential fatty acids were elevated.

Adult↗
PubMed1986

Computer aided diagnosis of acute abdominal pain at Middlesbrough General Hospital.

This presentation reports the experience of the surgical house staff and registrars at Middlesbrough General Hospital who used a desk-top computer system to support their clinical diagnosis of acute abdominal pain. The results cover a two year period and are compared with a baseline period of one year. Substantial benefits followed the introduction of the computer-aided diagnostic support system; increased diagnostic accuracy of the whole surgical team, reduction in negative laparotomy rates, earlier surgical intervention for acute appendicitis, reduction in the number of cases of perforated appendicitis and more efficient use of resources. The reasons for these improvements include more thorough collection of data, use of common terminology and an educational element provided by detailed feedback from the computer system.

Abdomen, Acute↗
PubMed1985

Plasma essential fatty acids in pure and mixed race American Indians on and off a diet exceptionally rich in salmon.

Eskimos on a traditional diet have unusually low prevalences of cardiovascular disease and cancer. One possible reason is the high intake of eicosapentaenoic acid (EPA) which is thought to account for the high EPA and low arachidonic acid (AA) levels in Eskimo plasma. People who also consume a traditional diet exceptionally rich in EPA are the Indians of the west coast of Vancouver Island. There are about 12,000 of these people and their traditional diet has been affected much less than that of the Eskimos. When on their traditional diet the Vancouver Island Indians, like the Eskimos, have high EPA and low AA levels in plasma. When eating European food, EPA levels are in the European range, but AA levels are still exceptionally low, a finding also reported from Eskimos living in Denmark. In a small mixed race group, AA levels were intermediate between those in pure Indians and in Europeans. The high EPA levels in Eskimos and West Coast Indians are related to diet. The low AA levels, in contrast, are probably genetically determined. Unusual disease patterns in these populations cannot be entirely attributed to diet.

Adult↗