Search Results - "Hichwa, R D"

A neural basis for lexical retrieval by Damasio, Hanna, Grabowski, Thomas J, Tranel, Daniel, Hichwa, Richard D, Damasio, Antonio R

“…Two parallel studies using positron emission tomography, one conducted in neurological patients with brain lesions, the other in normal individuals, indicate…”
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Cerebral Blood Flow Changes Associated With Attribution of Emotional Valence to Pleasant, Unpleasant, and Neutral Visual Stimuli in a PET Study of Normal Subjects by Paradiso, Sergio, Johnson, Debra L., Andreasen, Nancy C., O'Leary, Daniel S., Watkins, G. Leonard, Boles Ponto, Laura L., Hichwa, Richard D.

“…OBJECTIVE: To assist in the development of a model for the psychopathology of emotions, the present study sought to identify the neural circuits associated…”
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Hypofrontality in schizophrenia: distributed dysfunctional circuits in neuroleptic-naïve patients by Andreasen, N C, O'Leary, D S, Flaum, M, Nopoulos, P, Watkins, G L, Boles Ponto, L L, Hichwa, R D

“…There have been reports that patients with schizophrenia have decreased metabolic activity in prefrontal cortex. However, findings have been confounded by…”
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Direct comparison of the neural substrates of recognition memory for words and faces by Kim, J. J., Andreasen, N. C., O'Leary, D. S., Wiser, A. K., Ponto, L. L. Boles, Watkins, G. L., Hichwa, R. D.

“…For the purpose of identifying the relatively specific brain regions related to word and face recognition memory on the one hand and the regions common to both…”
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Schizophrenia and Cognitive Dysmetria: A Positron-Emission Tomography Study of Dysfunctional Prefrontal--Thalamic--Cerebellar Circuitry by Andreasen, Nancy C., O'Leary, Daniel S., Cizadlo, Ted, Arndt, Stephan, Rezai, Karim, Laura L. Boles Ponto, Watkins, G. Leonard, Hichwa, Richard D.

“…Patients suffering from schizophrenia display subtle cognitive abnormalities that may reflect a difficulty in rapidly coordinating the steps that occur in a…”
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Acute marijuana effects on rCBF and cognition: a PET study by OʼLeary, D S, Block, R I, Flaum, M, Schultz, S K, Boles Ponto, L L, Watkins, G L, Hurtig, R R, Andreasen, N C, Hichwa, R D

“…The effects of smoking marijuana on cognition and brain function were assessed with PET using H2O. Regional cerebral blood flow (rCBF) was measured in five…”
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Age-related changes in regional cerebral blood flow among young to mid-life adults by SCHULTZ, S. K, O'LEARY, D. S, BOLES PONTO, L. L, WATKINS, G. L, HICHWA, R. D, ANDREASEN, N. C

“…Using PET with [(15)O]H2O, we examined age in relation to regional cerebral blood flow (rCBF) among young to mid-life adults. Previous work has largely…”
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Recalling Word Lists Reveals "Cognitive Dysmetria" in Schizophrenia: A Positron Emission Tomography Study by Crespo-Facorro, Benedicto, Paradiso, Sergio, Andreasen, Nancy C., O'Leary, Daniel S., Watkins, G. Leonard, Boles Ponto, Laura L., Hichwa, Richard D.

“…OBJECTIVE: This study explored the neural circuitry used during recall of unstructured verbal material in schizophrenic patients and healthy volunteer…”
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Regional Neural Dysfunctions in Chronic Schizophrenia Studied With Positron Emission Tomography by Kim, Jae-Jin, Mohamed, Somaia, Andreasen, Nancy C., O'Leary, Daniel S., Watkins, G. Leonard, Boles Ponto, Laura L., Hichwa, Richard D.

“…OBJECTIVE: Whether chronicity of illness produces progressive neural abnormality is an important question in current schizophrenia research. Positron emission…”
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Cerebral Blood Flow and Personality: A Positron Emission Tomography Study by Johnson, Debra L., Wiebe, John S., Gold, Sherri M., Andreasen, Nancy C., Hichwa, Richard D., Watkins, G. Leonard, Boles Ponto, Laura L.

“…OBJECTIVE: This study sought to describe brain regions associated with the personality dimension of introversion extraversion. METHOD: Measures of cerebral…”
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Short-Term and Long-Term Verbal Memory: A Positron Emission Tomography Study by Andreasen, Nancy C., O'Leary, Daniel S., Arndt, Stephan, Cizadlo, Ted, Hurtig, Richard, Rezai, Karim, Watkins, G. Leonard, Laura L. Boles Ponto, Hichwa, Richard D.

“…Short-term and long-term retention of experimentally presented words were compared in a sample of 33 healthy normal volunteers by the [15O]I2O method with…”
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The cerebellum plays a role in conscious episodic memory retrieval by Andreasen, Nancy C., O'Leary, Daniel S., Paradiso, Sergio, Cizadlo, Ted, Arndt, Stephan, Watkins, G. Leonard, Boles Ponto, Laura L., Hichwa, Richard D.

“…The cerebellum has traditionally been considered to be primarily dedicated to motor functions. Its phylogenetic development and connectivity suggest, however,…”
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Age-related changes in regional cerebral blood flow among young to midlife adults by Schultz, S K, OʼLeary, D S, Ponto, L L. Boles, Watkins, G L, Hichwa, R D, Andreasen, N C

“…USING PET with [O]H2O, we examined age in relation to regional cerebral blood flow (rCBF) among young to mid-life adults. Previous work has largely contrasted…”
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Dysfunctional cortico-cerebellar circuits cause ‘cognitive dysmetria’ in schizophrenia by Wiser, Anne K, Andreasen, Nancy C, OʼLeary, Daniel S, Watkins, G Leonard, Boles Ponto, Laura L, Hichwa, Richard D

“…WE examined regional cerebral blood flow (rCBF) during a long-term recognition memory task for words in schizophrenic patients and in healthy subjects using…”
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Cerebellar hypoactivity in frequent marijuana users by Block, Robert I, OʼLeary, Daniel S, Hichwa, Richard D, Augustinack, Jean C, Ponto, Laura L. Boles, Ghoneim, M M, Arndt, Stephan, Ehrhardt, James C, Hurtig, Richard R, Watkins, G L, Hall, James A, Nathan, Peter E, Andreasen, Nancy C

“…It is uncertain whether frequent marijuana use adversely affects human brain function. Using PET, regional cerebral blood flow was compared in frequent…”
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Emotional activation of limbic circuitry in elderly normal subjects in a PET study by PARADISO, S, ROBINSON, R. G, ANDREASEN, N. C, DOWNHILL, J. E, DAVIDSON, R. J, KIRCHNER, P. T, WATKINS, G. L, PONTO, L. L. B, HICHWA, R. D

“…OBJECTIVE: This study was undertaken to identify brain structures associated with emotion in normal elderly subjects. METHOD: Eight normal subjects aged 55-78…”
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Subcortical and cortical brain activity during the feeling of self-generated emotions by Damasio, Antonio R, Grabowski, Thomas J, Bechara, Antoine, Damasio, Hanna, Ponto, Laura L.B, Parvizi, Josef, Hichwa, Richard D

“…In a series of [15O]PET experiments aimed at investigating the neural basis of emotion and feeling, 41 normal subjects recalled and re-experienced personal…”
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Effect of antipsychotics on regional cerebral blood flow measured with positron emission tomography by Miller, Del D, Andreasen, Nancy C., O'Leary, Daniel S., Rezai, Karim, Leonard Watkins, G., Boles Ponto, Laura L., Hichwa, Richard D.

“…Positron Emission Tomography (PET) imaging of regional cerebral blood flow (rCBF) provides an in vivo method for studying brain function. We used [15O]H2O PET…”
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Remembering the past: two facets of episodic memory explored with positron emission tomography by Andreasen, N C, O'Leary, D S, Cizadlo, T, Arndt, S, Rezai, K, Watkins, G L, Ponto, L L, Hichwa, R D

“…This study used positron emission tomography to examine two kinds of personal memory that are used in psychiatric evaluation: focused episodic memory (recall…”
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A Positron Emission Tomography Study of Binaurally and Dichotically Presented Stimuli: Effects of Level of Language and Directed Attention by O'Leary, Daniel S., Andreasen, Nancy C., Hurtig, Richard R., Hichwa, Richard D., Watkins, G.Leonard, Boles Ponto, Laura L., Rogers, Margaret, Kirchner, Peter T.

“…Regional cerebral blood flow (rCBF) was measured using positron emission tomography with oxygen-15 labeled water as 10 normal subjects listened to three types…”
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