Zobrazeno 1 - 10
of 14
pro vyhledávání: '"John L. Antunes"'
Publikováno v:
The Journal of Clinical Endocrinology & Metabolism. 55:877-881
Previous studies in female monkeys have shown that beta-endorphin (beta-EP) of hypothalamic origin is present in high concentrations in the hypophyseal portal blood and declines at the time of menses and after ovariectomy. In this study we have exami
Publikováno v:
Neurosurgery. 12:492-495
Autor:
Andrew G. Frantz, Michel Ferin, John L. Antunes, Peter W. Carmel, Inge Dyrenfurth, L. Vaughan
Publikováno v:
Neuroendocrinology. 30:70-75
The effects of pituitary stalk section on anterior pituitary secretion were studied in 20 female rhesus monkeys. Vascular connections between the hypothalamus and the pituitary gland were permanently interrupted in all but 4 animals. Prolactin levels
Autor:
Peter Ning, John L. Antunes, John P. Girvin, Michael D. O’Keefe, Donald O. Quest, Lawrence E. Marks, Wm. H. Dobelle
Publikováno v:
Perception & Psychophysics. 32:524-528
Thresholds for detecting electrical stimulation were measured as a function of (1) body locus, (2) electrode configuration, (3) stimulus waveform, and (4) pulse duration. The results were: (1) the forehead gave slightly, but not reliably, lower thres
Autor:
John L. Antunes
Publikováno v:
Neurosurgery. 5(1 Pt 1)
The feedback loops involved in the neural control of reproductive cyclicity in primates are reviewed. A combination of morphological, endocrinological, and surgical experimental approaches was used to identify the different mechanisms involved. The m
Autor:
Wm. H. Dobelle, Donald O. Quest, Peter Ning, John P. Girvin, Lawrence E. Marks, John L. Antunes, Michael D. O’Keefe
Publikováno v:
Perceptionpsychophysics. 32(6)
Temporal order thresholds were measured for brief electrical stimuli presented to the forehead and to the abdomen. Temporal acuity is better (thresholds smaller) on the forehead, sensitivity increasing somewhat (thresholds decreasing) as the physical
Autor:
John P. Girvin, Wm. H. Dobelle, Lawrence E. Marks, John L. Antunes, Peter Ning, Michael D. O’Keefe, Donald O. Quest
Publikováno v:
Perceptionpsychophysics. 32(6)
Using a numerical estimation procedure, subjects judged the perceived distance between pairs of brief electrical stimuli presented over different physical distances, on different body regions, and in different spatial orientations. The skin turns out
Publikováno v:
Neurosurgery. 13(6)
A case of an occipital encephalocele is described. Morphological analysis of the surgical specimen suggests that the case represents an instance of incomplete conjoined twinning.
Publikováno v:
Neurosurgery. 10(4)
Four cases of hemangiopericytoma of the spine are reported. These are rare tumors that arise from the pericytes. Due to their invasive nature and marked vascularity, a detailed radiological work-up including computed tomography and spinal angiography
Autor:
Peter W. Carmel, John L. Antunes, Eugene Balis, Alan Fleischer, Charles Hodge, Fred Sklar, Clark Watts
Publikováno v:
Neurosurgery. 27:v-vi