John Hammerstad

Professor

  • 4835 Citations
  • 27 h-Index
1967 …2007

Research output per year

If you made any changes in Pure these will be visible here soon.

Research Output

  • 4835 Citations
  • 27 h-Index
  • 52 Article
  • 3 Letter
  • 2 Review article
  • 1 Chapter
Filter
Article
2005

Pallidal vs subthalamic nucleus deep brain stimulation in Parkinson disease

Anderson, V. C., Burchiel, K. J., Hogarth, P., Favre, J. & Hammerstad, J. P., Apr 1 2005, In : Archives of Neurology. 62, 4, p. 554-560 7 p.

Research output: Contribution to journalArticle

355 Scopus citations
2004

Levodopa and the progression of parkinson’s disease

The parkinson study group, Dec 9 2004, In : New England Journal of Medicine. 351, 24, p. 2498-2508 11 p.

Research output: Contribution to journalArticle

1224 Scopus citations
2001

A randomized, controlled trial of remacemide for motor fluctuations in parkinson’s disease

Parkinson study group, Aug 14 2001, In : Neurology. 56, 4, p. 455-462 8 p.

Research output: Contribution to journalArticle

49 Scopus citations

Assessments of axial motor control during deep brain in Parkinsonian patients

Robertson, L. T., Horak, F. B., Anderson, V. C., Burchiel, K. J. & Hammerstad, J. P., Mar 19 2001, In : Neurosurgery. 48, 3, p. 544-552 9 p.

Research output: Contribution to journalArticle

22 Scopus citations

DBS and diathermy interaction induces severe CNS damage

Nutt, J. G., Anderson, V. C., Peacock, J. H., Hammerstad, J. P. & Burchiel, K. J., May 22 2001, In : Neurology. 56, 10, p. 1384-1386 3 p.

Research output: Contribution to journalArticle

100 Scopus citations

Functional correlates of pallidal stimulation for Parkinson's disease

Fukuda, M., Mentis, M., Ghilardi, M. F., Dhawan, V., Antonini, A., Hammerstad, J., Lozano, A. M., Lang, A., Lyons, K., Koller, W., Ghez, C. & Eidelberg, D., Feb 27 2001, In : Annals of Neurology. 49, 2, p. 155-164 10 p.

Research output: Contribution to journalArticle

90 Scopus citations

Interactions between deep brain stimulation and levodopa in Parkinson's disease

Nutt, J. G., Rufener, S. L., Carter, J. H., Anderson, V. C., Pahwa, R., Hammerstad, J. P. & Burchiel, K. J., Nov 27 2001, In : Neurology. 57, 10, p. 1835-1842 8 p.

Research output: Contribution to journalArticle

56 Scopus citations

Networks mediating the clinical effects of pallidal brain stimulation for Parkinson's disease. A PET study of resting-state glucose metabolism

Fukuda, M., Mentis, M. J., Ma, Y., Dhawan, V., Antonini, A., Lang, A. E., Lozano, A. M., Hammerstad, J., Lyons, K., Koller, W. C., Moeller, J. R. & Eidelberg, D., Aug 20 2001, In : Brain. 124, 8, p. 1601-1609 9 p.

Research output: Contribution to journalArticle

114 Scopus citations
2000

Outcome of unilateral and bilateral pallidotomy for Parkinson's disease: Patient assessment

Favre, J., Burchiel, K. J., Taha, J. M. & Hammerstad, J., Feb 2000, In : Neurosurgery. 46, 2, p. 344-355 12 p.

Research output: Contribution to journalArticle

68 Scopus citations
1999
302 Scopus citations
1998

Ropinirole for the treatment of early Parkinson disease: A 12-month experience

Sethi, K. D., O'Brien, C. F., Hammerstad, J. P., Adler, C. H., Davis, T. L., Taylor, R. L., Sanchez-Ramos, J., Bertoni, J. M. & Hauser, R. A., Sep 1 1998, In : Archives of Neurology. 55, 9, p. 1211-1216 6 p.

Research output: Contribution to journalArticle

82 Scopus citations
1997

Ropinirole for the treatment of early Parkinson's disease

Adler, C. H., Sethi, K. D., Hauser, R. A., Davis, T. L., Hammerstad, J. P., Bertoni, J., Taylor, R. L., Sanchez-Ramos, J. & O'Brien, C. F., Aug 1997, In : Neurology. 49, 2, p. 393-399 7 p.

Research output: Contribution to journalArticle

262 Scopus citations
1996

Jaw movement dysfunction related to Parkinson's disease and partially modified by levodopa

Robertson, L. T. & Hammerstad, J. P., Jan 1996, In : Journal of Neurology Neurosurgery and Psychiatry. 60, 1, p. 41-50 10 p.

Research output: Contribution to journalArticle

Open Access
34 Scopus citations
1995

Patterns of asymmetry do not change over the course of idiopathic parkinsonism: Implications for pathogenesis

Lee, C. S., Schulzer, M., Mak, E., Hammerstad, J. P., Calne, S. & Calne, D. B., Mar 1995, In : Neurology. 45, 3, p. 435-439 5 p.

Research output: Contribution to journalArticle

84 Scopus citations
1994

Clinical observations on the rate of progression of idiopathic parkinsonism

Lee, C. S., Schulzer, M., Mak, E. K., Snow, B. J., Tsui, J. K., Clane, S., Hammerstad, J. & Clane, D. B., Jun 1 1994, In : Brain. 117, 3, p. 501-507 7 p.

Research output: Contribution to journalArticle

123 Scopus citations

Controlled release levodopa/carbidopa 25/100 (Sinemet CR 25/100): Pharmacokinetics and clinical efficacy in untreated parkinsonian patients

Hammerstad, J. P., Woodward, W. R., Nutt, J. G., Gancher, S. T., Block, G. A. & Cyhan, G., Jan 1 1994, In : Clinical neuropharmacology. 17, 5, p. 429-434 6 p.

Research output: Contribution to journalArticle

17 Scopus citations

Dihydroergotamine nasal spray for the acute treatment of migraine

Ziegler, D. K., Ford, R., Kriegler, J., Gallagher, R. M., Peroutka, S., Hammerstad, J., Saper, J., Hoffert, M., Vogel, B., Holtz, N. & Di Serio, F., Mar 1994, In : Neurology. 44, 3, p. 447-453 7 p.

Research output: Contribution to journalArticle

57 Scopus citations

Effect of peripheral catechol-O-methyltransferase inhibition on the pharmacokinetics and pharmacodynamics of levodopa in parkinsonian patients

Nutt, J. G., Woodward, W. R., Beckner, R. M., Stone, C. K., Berggren, K., Carter, J. H., Gancher, S. T., Hammerstad, J. P. & Gordin, A., May 1 1994, In : Neurology. 44, 5, p. 913-919 7 p.

Research output: Contribution to journalArticle

257 Scopus citations

Tendon jerks in Parkinson's disease

Hammerstad, J. P., Elliott, K., Mak, E., Schulzer, M., Calne, S. & Calne, D. B., Feb 1 1994, In : Journal of Neural Transmission - Parkinsons Disease and Dementia Section. 8, 1-2, p. 123-130 8 p.

Research output: Contribution to journalArticle

4 Scopus citations
1993

Does tolerance develop to levodopa? Comparison of 2‐and 21‐h levodopa infusions

Nutt, J. G., Carter, J. H., Woodward, W., Hammerstad, J. P. & Gancher, S. T., 1993, In : Movement Disorders. 8, 2, p. 139-143 5 p.

Research output: Contribution to journalArticle

23 Scopus citations

The transport of L‐6‐fluorodopa and its metabolites from blood to cerebrospinal fluid and brain

Hammerstad, J. P., Pate, B. D., Hewitt, K. A., Chan, G. LY., Ruth, T. J. & Calne, D. B., Oct 1993, In : Annals of Neurology. 34, 4, p. 603-608 6 p.

Research output: Contribution to journalArticle

13 Scopus citations
1990

L‐Dopa pharmacokinetics in plasma and cisternal and lumbar cerebrospinal fluid of monkeys

Hammerstad, J. P., Woodward, W. R., Gliessman, P., Boucher, B. & Nutt, J. G., May 1990, In : Annals of Neurology. 27, 5, p. 495-499 5 p.

Research output: Contribution to journalArticle

19 Scopus citations
1987
13 Scopus citations
1986

Buspirone in Parkinson's disease

Hammerstad, J. P., Carter, J., Nutt, J. G., Casten, G. C., Shrotriya, R. C., Alms, D. R. & Temple, D., Jan 1 1986, In : Clinical neuropharmacology. 9, 6, p. 556-560 5 p.

Research output: Contribution to journalArticle

26 Scopus citations
1985

Lisuride treatment of focal dystonias

Nutt, J. G., Hammerstad, J. P., Carter, J. H. & deGarmo, P. L., Aug 1985, In : Neurology. 35, 8, p. 1242-1243 2 p.

Research output: Contribution to journalArticle

11 Scopus citations
1984

Cranial dystonia: Double-blind crossover study of anticholinergics

Nutt, J. G., Hammerstad, J. P., deGarmo, P. & Carter, J., Feb 1984, In : Neurology. 34, 2, p. 215-517 303 p.

Research output: Contribution to journalArticle

26 Scopus citations

The On–Off Phenomenon in Parkinson's Disease: Relation to Levodopa Absorption and Transport

Nutt, J. G., Woodward, W. R., Hammerstad, J. P., Carter, J. H. & Anderson, J. L., Feb 23 1984, In : New England Journal of Medicine. 310, 8, p. 483-488 6 p.

Research output: Contribution to journalArticle

440 Scopus citations
1983

Meige syndrome: treatment with trihexyphenidyl.

Nutt, J. G., Hammerstad, J. P., Carter, J. H. & deGarmo, P., Jan 1 1983, In : Advances in neurology. 37, p. 201-205 5 p.

Research output: Contribution to journalArticle

5 Scopus citations

What is the function of carbidopa in the treatment of Parkinsonism?

Nutt, J. G., Woodward, W. R., Anderson, J. L. & Hammerstad, J. P., Jan 1 1983, In : Annals of Neurology. 14, 1, p. P83

Research output: Contribution to journalArticle

2 Scopus citations
1982

Internal Cerebral Vein Thrombosis: A Case Report

Nishimura, R. N., Stepanek, D., Howieson, J. & Hammerstad, J., Jul 1982, In : Archives of Neurology. 39, 7, p. 439-440 2 p.

Research output: Contribution to journalArticle

18 Scopus citations
1981

Blepharospasm and oromandibular dystonia (Meige's syndrome) in sisters

Nutt, J. G. & Hammerstad, J. P., Feb 1981, In : Annals of Neurology. 9, 2, p. 189-191 3 p.

Research output: Contribution to journalArticle

18 Scopus citations

Hyperparathyroidism and intracerebral calcification

Orwoll, E. S., Margolin, D. I. & Hammerstad, J. P., Jan 1 1981, In : Mineral and Electrolyte Metabolism. 5, 6, p. 273-279 7 p.

Research output: Contribution to journalArticle

3 Scopus citations

Psychologist-physician partnership in a medical specialty screening clinic

Harper, R. G., Wiens, A. N. & Hammerstad, J., Jun 1 1981, In : Professional Psychology: Research and Practice. 12, 3, p. 341-348 8 p.

Research output: Contribution to journalArticle

2 Scopus citations
1980

Intracranial calcification in hyperparathyroidism associated with gait apraxia and parkinsonism

Margolin, D., Hammerstad, J., Orwoll, E., McClung, M. & Calhoun, D., Sep 1980, In : Neurology. 30, 9, p. 1005-1007 3 p.

Research output: Contribution to journalArticle

34 Scopus citations

The effect of raising brain GABA on an animal model of hyperkinesia

Hammerstad, J., Gronke, L., Nutt, J. & Casey, D., Jan 1 1980, In : Neurology. 30, 4, p. PP 129

Research output: Contribution to journalArticle

The effect of γ-vinyl GABA on amphetamine stereotypy in rats

Hammerstad, J. P., Gronke, L., Nutt, J. & Casey, D., 1980, In : Brain Research Bulletin. 5, SUPPL. 2, p. 609-612 4 p.

Research output: Contribution to journalArticle

4 Scopus citations
1979
26 Scopus citations

Sodium valproate in tardive dyskinesia

Casey, D. E. & Hammerstad, J. P., Dec 1 1979, In : Journal of Clinical Psychiatry. 40, 11, p. 483-485 3 p.

Research output: Contribution to journalArticle

17 Scopus citations
1976

RELEASE OF [3H]GABA FROM RAT CORTICAL SLICES: NEURONAL VS GLIAL ORIGIN

Hammerstad, J. P. & Lyte, C. R., Aug 1976, In : Journal of neurochemistry. 27, 2, p. 399-403 5 p.

Research output: Contribution to journalArticle

33 Scopus citations
1973

ACCELERATED EFFLUX OF [14C] AND [3H] AMINO ACIDS FROM SUPERFUSED SLICES OF RAT BRAIN

Crnic, D. M., Hammerstad, J. P. & Cutler, R. W. P., Jan 1973, In : Journal of neurochemistry. 20, 1, p. 203-209 7 p.

Research output: Contribution to journalArticle

35 Scopus citations
1972

Efflux of amino acid neurotransmitters from brain slices: Role of membrane transport

Hammerstad, J. P. & Cutler, R. W. P., Oct 1972, In : European Journal of Pharmacology. 20, 1, p. 118-121 4 p.

Research output: Contribution to journalArticle

24 Scopus citations

Role of mediated transport in the electrically‐induced release of [14C]glycine from slices of rat spinal cord

Cutler, R. W. P., Murray, J. E. & Hammerstad, J. P., Feb 1972, In : Journal of Neurochemistry. 19, 2, p. 539-542 4 p.

Research output: Contribution to journalArticle

10 Scopus citations

Sodium ion movements and the spontaneous and electrically stimulated release of [3H]GABA and [14C]glutamic acid from rat cortical slices

Hammerstad, J. P. & Cutler, R. W. P., Dec 12 1972, In : Brain research. 47, 2, p. 401-413 13 p.

Research output: Contribution to journalArticle

43 Scopus citations
1971

Efflux of amino acid neurotransmitters from rat spinal cord slices. I. Factors influencing the spontaneous efflux of [14C]glycine and 3H-GABA

Cutler, R. W. P., Hammerstad, J. P., Cornick, L. R. & Murray, J. E., Dec 24 1971, In : Brain research. 35, 2, p. 337-355 19 p.

Research output: Contribution to journalArticle

37 Scopus citations

Efflux of amino acid neurotransmitters from rat spinal cord slices. II. Factors influencing the electrically induced efflux of [14C]glycine and 3H-GABA

Hammerstad, J. P., Murray, J. E. & Cutler, R. W. P., Dec 24 1971, In : Brain research. 35, 2, p. 357-367 11 p.

Research output: Contribution to journalArticle

73 Scopus citations
1970

Cerebrospinal fluid formation and absorption and transport of iodide and sulfate from the spinal subarachnoid space

Lorenzo, A. V., Hammerstad, J. P. & Cutler, R. W. P., Mar 1970, In : Journal of the neurological sciences. 10, 3, p. 247-258 12 p.

Research output: Contribution to journalArticle

27 Scopus citations

The origin and turnover rates of cerebrospinal fluid albumin and gamma-globulin in man

Cutler, R. W. P., Watters, G. V. & Hammerstad, J. P., Mar 1970, In : Journal of the neurological sciences. 10, 3, p. 259-268 10 p.

Research output: Contribution to journalArticle

56 Scopus citations
1969

Iodide transport from the spinal subarachnoid fluid in the cat.

Hammerstad, J. P., Lorenzo, A. V. & Cutler, R. W., Feb 1969, In : The American journal of physiology. 216, 2, p. 353-358 6 p.

Research output: Contribution to journalArticle

25 Scopus citations
1968

Clearance of iodide and sulfate from the spinal subarachnoid compartment.

Hammerstad, J. P., Lorenzo, A. & Cutler, R. W., Mar 1 1968, In : Neurology. 18, 3, p. 296-297 2 p.

Research output: Contribution to journalArticle

1 Scopus citations

Production of antibody by the central nervous system in subacute sclerosing panencephalitis

Cutler, R. W. P., Merler, E. & Hammerstad, J. P., Jan 1968, In : Neurology. 18, 1, p. 129-132 4 p.

Research output: Contribution to journalArticle

33 Scopus citations