Výsledky vyhledávání - "G L, Watkins"

Autor: L. L. Boles Ponto, Susan K. Schultz, Richard D. Hichwa, G. L. Watkins, Daniel S. O'Leary, Nancy C. Andreasen

Publikováno v: NeuroReport. 10:2493-2496

USING PET with [ 15 O]H 2 O, we examined age in relation to regional cerebral blood flow (rCBF) among young to mid-life adults. Previous work has largely contrasted rCBF between young and elderly age groups dichotomously. This study maps the continuu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5181862caca9eadce38b713c35f6e8c6
https://doi.org/10.1097/00001756-199908200-00011

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Direct comparison of the neural substrates of recognition memory for words and faces

Autor: J. J. Kim, Richard D. Hichwa, Laura L. Boles Ponto, A. K. Wiser, Nancy C. Andreasen, G. L. Watkins, Daniel S. O'Leary

Publikováno v: Brain. 122:1069-1083

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 on the other, regional cerebral blood flow associated with different cognitive tasks for r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9522dfe1980e46f8046dfdf1e719fc78
https://doi.org/10.1093/brain/122.6.1069

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Dysfunctional cortico-cerebellar circuits cause ‘cognitive dysmetria’ in schizophrenia

Autor: Daniel S. O'Leary, L. L. Boles Ponto, A. K. Wiser, G. L. Watkins, Nancy C. Andreasen, Richard D. Hichwa

Publikováno v: NeuroReport. 9:1895-1899

WE examined regional cerebral blood flow (rCBF) during a long-term recognition memory task for words in schizophrenic patients and in healthy subjects using positron emission tomography (PET). The task was designed so that performance scores were sim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58f6ddcfb657242dd5610b8221cb0cb1
https://doi.org/10.1097/00001756-199806010-00042

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Schizophrenia and cognitive dysmetria: a positron-emission tomography study of dysfunctional prefrontal-thalamic-cerebellar circuitry

Autor: Ted Cizadlo, Karim Rezai, Laura L. Boles Ponto, Daniel S. O'Leary, G. L. Watkins, Stephan Arndt, Richard D. Hichwa, Nancy C. Andreasen

Publikováno v: Proceedings of the National Academy of Sciences. 93:9985-9990

Patients suffering from schizophrenia display subtle cognitive abnormalities that may reflect a difficulty in rapidly coordinating the steps that occur in a variety of mental activities. Working interactively with the prefrontal cortex, the cerebellu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::def15f5eac6aa0fc36099bc514f7d6dc
https://doi.org/10.1073/pnas.93.18.9985

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Neural substrates of facial recognition

Autor: Karim Rezai, Ted Cizadlo, Nancy C. Andreasen, Daniel S. O'Leary, Richard R. Hurtig, Laura Boles Ponto, G. L. Watkins, Stephan Arndt, Richard D. Hichwa

Publikováno v: The Journal of Neuropsychiatry and Clinical Neurosciences. 8:139-146

Seventeen healthy normal volunteers performed three facial recognition tasks while their cerebral blood flow was measured with PET: categorizing faces according to gender, recognizing new faces, and recognizing familiar faces. These tasks activated t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ccfdbc7508d89be2a2246565631f174
https://doi.org/10.1176/jnp.8.2.139

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Reliability of PET activation across statistical methods, subject groups, and sample sizes

Autor: Richard D. Hichwa, R.J. Frank, L. L. Boles Ponto, C.K. Brown, Thomas J. Grabowski, Hanna Damasio, G. L. Watkins

Publikováno v: Human Brain Mapping. 4:23-46

Four pixel-based methods for estimating regional activation in positron emission tomography (PET) images were implemented so as to allow the comparison of their performances in the same dataset. Change distribution analysis, Worsley's method, a pixel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33593884beb2da7be912cae94337ec77
https://doi.org/10.1002/(sici)1097-0193(1996)4:1<23::aid-hbm2>3.0.co

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Detection of Unsuspected Metastasis in a Melanoma Patient With Positron Emission Tomography

Autor: L. F. Urdaneta, Richard D. Hichwa, G. L. Watkins, A. S. Dogan, Laura L. Boles Ponto, E. E. Argenyi

Publikováno v: Clinical Nuclear Medicine. 20:744-747

A 41-year-old obese woman had a nodular melanoma removed from the right calf 14 years ago. At the time of the diagnosis, she also underwent right inguinal lymph node dissection with no evidence of metastatic tumor. She presented with a new 2 cm mass

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca16a06bd41c173c711a915e76389ca0
https://doi.org/10.1097/00003072-199508000-00026

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A comparison of approaches to the statistical analysis of [15O]H2O PET cognitive activation studies

Autor: Gene Zeien, Nancy C. Andreasen, Daniel S. O'Leary, Richard D. Hichwa, Greg Harris, G. L. Watkins, Stephan Arndt, Ted Cizadlo, Laura L. Boles Ponto

Publikováno v: The Journal of Neuropsychiatry and Clinical Neurosciences. 7:155-168

This study compares two of the most widely used statistical techniques for analyzing data obtained from [15O]H2O PET studies of brain function. The Friston method (SPM94) and the Worsley (Montreal) method were applied to a single data set of 33 subje

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cce799b1aad2912e7caac1e41b56471
https://doi.org/10.1176/jnp.7.2.155

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