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Biomedical subjects

C Jorgenson

Publications and source records attributed to C Jorgenson.

6 recordsLinked to original sources
PubMed1997

End-to-side neurorrhaphy: a histologic and morphometric study of axonal sprouting into an end-to-side nerve graft.

This study investigated axonal regeneration in a denervated nerve graft sutured end-to-side with a main peripheral nerve trunk. To demonstrate morphologic changes, the peroneal nerve was severed in a rat and coapted end-to-side to the posterior tibial nerve. The integrity of the epineurial and perineurial sheath was altered in four different groups. Histologic evaluation 30 days after operation showed axonal regeneration in the nerve graft in all groups. Morphometric analysis of cross sections of the grafted nerve elucidated the importance of severance of the perineurium in end-to-side neurorrhaphy.

Anastomosis, Surgical↗
PubMed1996

Changing cost-accounting procedures in the ED.

A study addressing cost containment in the emergency department examines nurses' attitudes toward cost-effectiveness and their reasons for noncompliance. Strategies to improve cost-accounting procedures are given.

Accounting↗
PubMed1985

Idiopathic spasmodic torticollis.

Idiopathic spasmodic torticollis (IST) is discussed from the perspective of definition and description, clinical presentation, and modes of treatment including a new, innovative, surgical approach. The role of the physician and the neurosurgical nurse in the management of idiopathic spasmodic torticollis is considered.

Amantadine↗
PubMed1980

Hemispheric asymmetry in the processing of Stroop stimuli: an examination of gender, hand-preference, and language differences.

The present investigation examined the possibility that the explanation for the Stroop phenomenon lies in the hemispheric asymmetry of the human brain. Forty-eight male and 73 female students from freshman psychology classes served as subjects for this study. There were 37 males and 53 females who were right-handed and monolingual; 16 left-handers (five males, 11 females); and 13 bilingual subjects (four male, nine female) included in the sample. Only one person was both left-handed and bilingual. All subjects responded to color words printed in incongruent colors by reading the word or reporting the color in which the word was printed. Response latencies were recorded in hundredths of a second for each of the 36 trials for each subject. For all individuals, response latency was consistently shorter when reading the word than when reporting the color. Females demonstrated a shorter latency for the color stimuli than did males; however males demonstrated a shorter latency for the word stimuli. Evidence indicated that the Stroop phenomenon may best be explained by different modes of neural processing for symbolic and iconic stimuli for all individuals. It was further indicated that females have greater flexibility between hemispheres unless other intervening factors (i.e., hand preference or language differences) provide a symmetry in hemispheric functioning not ordinarily found in males.

Adolescent↗
PubMed1978

Influence of set on perception.

To examine the role which preparatory set plays in visual perception three groups of undergraduates were presented 10 items displayed tachistoscopically in .125-sec exposures. The two experimental groups were each given a different preparatory set relevant to the content of the items. The third group, the control group, was given no preparatory set. Six of the 10 items displayed were ambiguous items which might be seen as belonging to either set. Although the two experimental groups perceived more items correctly than did the control group, an analysis of the responses indicated that preparatory set did influence perception. Each experimental group perceived three times as many items as belonging to its set as did the other group.

Female↗