T S Callahan

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Neuropsychological studies have documented frontal dysfunction in patients with a history of exposure to organic solvents. The deficits typically observed in these patients appear to be related to working memory (WM). This study used [15O] water positron emission tomography (PET) to examine the pattern of neural activation during verbal working memory in(More)
Mercury has well-established toxic effects on the central nervous system. This article describes comprehensive neuropsychological and emotional functioning of a group of 13 workers exposed to inorganic mercury vapor compared to that of a normal control group. The exposed group was exposed over a 2- to 4-week period and had elevated blood mercury levels. The(More)
A two-phased analysis of the WMS-R is reported In the first phase, confirmatory factor analyses of the WMS-R standardization sample were conducted in order to identify a baseline model against which to compare two large samples of substance abusers These analyses revealed that most of the exploratory factor models reported in the literature were plausible(More)
Nonsuicidal and suicidal adolescent inpatients were compared to community high school students using behavioral measures of impulsivity. Measures of problem solving ability, hopelessness, and depression were also administered to all groups. The suicidal inpatients were characterized by greater impulsivity, hopelessness, and depression than both nonsuicidal(More)
Thalamic nuclei appear to play an important role in memory functioning. Severe anterograde amnesia has been reported with lesions of the dorsomedial and anterior nuclei and their connections. We report the case of a woman with discrete thalamic lesions involving the anterior and dorsomedial nuclei who had a persistent anterograde amnesia. Contrary to a(More)
  • Lt Col, Thomas F Baldy, Maj Joseph, T Callahan, Iii Maj, Louise A Christ Maj +7 others
  • 1996
Disclaimer 2025 is a study designed to comply with a directive from the chief of staff of the Air Force to examine the concepts, capabilities, and technologies the United States will require to remain the dominant air and space force in the future. Presented on 17 June 1996, this report was produced in the Department of Defense school environment of(More)
Inpatients diagnosed as having borderline personality disorder (BPD) by DSM-III criteria who were admitted to 11 Central Neuropsychiatric Hospital Association (CNPHA) hospitals in 1982 and 1983 are described in terms of 28 clinical-history and demographic characteristics. This study statistically compared 181 BPD inpatients to 1,121 non-BPD inpatients(More)
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