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Gregory Campbell

Researcher at National Institutes of Health

Publications -  28
Citations -  2035

Gregory Campbell is an academic researcher from National Institutes of Health. The author has contributed to research in topics: Loss of heterozygosity & Population. The author has an hindex of 18, co-authored 28 publications receiving 1997 citations. Previous affiliations of Gregory Campbell include Western Infirmary.

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Complexity affects regional cerebral blood flow change during sequential finger movements

Norihiro Sadato, +4 more
- 15 Apr 1996 - 
TL;DR: The findings suggest that complex sequential finger movements recruit a discrete set of brain areas, in addition to areas underlying the execution of simple movement sequences, in exchange for an executive role in running sequences, regardless of their length.
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Frequency-Dependent Changes of Regional Cerebral Blood Flow during Finger Movements

Norihiro Sadato, +5 more
- 01 Jan 1996 - 
TL;DR: Changes correlating with those in the SMA were found in the anterior cingulate gyrus, right prefrontal area, and right thalamus, and the decreases in CBF may reflect a progressive change in performance from reactive to predictive.
Journal ArticleDOI

Frequency-dependent changes of regional cerebral blood flow during finger movements: functional MRI compared to PET.

Norihiro Sadato, +5 more
- 01 Jun 1997 - 
TL;DR: The combination of progressively increasing signal intensity with an area that increases to 2 Hz and declines at faster frequencies explains the PET finding of plateau of rCBF at the faster frequencies.
Journal ArticleDOI

Mutations in Human Breast Cancer: An Overview

Robert Callahan, +1 more
- 06 Dec 1989 - 
TL;DR: Eight mutations have been identified, including amplification of c-myc, c-erbB2, and int-2, as well as loss of heterozygosity on five chromosomes, which are thought to unmask recessive mutations of tumor-suppressor genes.
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Randomized trial of chlorambucil for primary biliary cirrhosis.

Jay H. Hoofnagle, +23 more
- 01 Dec 1986 - 
TL;DR: It is indicated that chlorambucil therapy may retard the progression of primary biliary cirrhosis and whether such therapy will ultimately decrease morbidity and improve survival in this disease can only be demonstrated by large-scale, placebo-controlled trials.