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Biomedical subjects

R Cohn

Publications and source records attributed to R Cohn.

At least 37 records · Page 2Linked to original sources
PubMed1977

Artistic production in dyslectic children.

In the study of children with language problems, particularly in reading and writing, it has been observed that some have an outstanding ability to produce artistic pictures and objects. These productions are perceptive, well organized and generally contain much action. Despite their pictorial skill these patients may have only a rudimentary use of coded symbolic graphic forms. Others display moderate ability in reading and writing. These patients frequently have the disorganized overacctive behavior and the motor clumsiness that is so common in the dyslectic child; some, however, are biologically effective. From this material we entertain the hypothesis that picture (artistic) productions are generated by the sub-dominant cerebral hemisphere, and that this function is quite distinct from the coded graphic operations resident in the dominant hemisphere. If this hypothesis is correct, it would seem socially benefical to allow these patients to develop their unique artistic ability to its full capacity, and not to overemphasize the correction of the disturbed coded symbol operations in remedial training.

Adolescent↗
PubMed1976

Beta-methylcrotonic aciduria associated with lactic acidosis.

A patient is described in whom lactic acidosis of very severe degree was found to coincide with the presence of beta-methylcrotonic acid and rho-hydroxyphenyllactic acid in urine in large amounts, while beta-hydroxyisovaleric acid was found to be a relatively minor excretion product. Beta-methylcrotonic acid is demonstrated, for the first time, to be present in blood and CSF. These findings are discussed in relation to the patients previously reported to have beta-methylcrotonylglycinuria and raise the possibility that our patient's organic aciduria may be secondary to acquired disease rather than to an inborn error of metabolism.

Amino Acids↗
PubMed1974

Forty-day fever. An epidemic of cytomegalovirus disease in a renal transplant population.

An epidemic of cytomegalovirus disease (CMV) occurred in 38 percent of 34 renal transplant recipients during an 18-month period. A characteristic clinical pattern was noted: 40 days following transplantation, daily fevers recurred for periods of four to six weeks. This fever in conjunction with a diffuse interstitial pneumonitis and impaired hepatic and renal function constituted a diagnostic tetrad. Of all the laboratory techniques, throat and urine cultures were the most consistent in confirming the diagnosis. Analysis of the epidemic implicated the communal hemodialysis unit as the source of exposure to the virus. CMV was not seen in the first 86 patients who received transplants in the program, but with increasing use of hemodialysis, the percentage of patients with positive serologic reaction for CMV increased dramatically.

Adolescent↗
PubMed1972

Summated cortical evoked response testing in the deafferented primate.

Dorsal rhizotomy from C(2) or C(3) to T(4) in the primate results in failure to elicit summated cortical responses from systematic stimulation of the appropriate peripheral nerves. Under these conditions there is thus no evidence of sensory input into the cerebral cortex. A nonclassical mechanism must therefore be operational to explain the extensive purposive movements observed in the deafferented animals.

Animals↗