In adult monkeys with dorsal rhizotomies extending from the second cervical (C2) to the fifth thoracic (T5) vertebrae, cortex deprived of its normal inputs regained responsiveness to inputs conveyed by intact peripheral afferents from the face [T.P. Pons, P.E. Garraghty, A.K. Ommaya, J.H. Kaas, E. Taub, M. Mishkin, Massive reorganization of the primary… (More)
It has previously been demonstrated that the central somatosensory topographic reorganization within deprived cortex that follows peripheral nerve injury in adult monkeys occurs in at least two stages: an immediate unmasking period; and a more prolonged period where deprived areas of cortex come to express new receptive fields in a topographically arranged… (More)
We have previously shown that most of the reorganization that typically follows median nerve transection in adult squirrel monkeys is dependent on normally functioning N-methyl-D-aspartate (NMDA) receptors. Here, we have evaluated two additional hypotheses: (1) is the immediate "unmasking" found after median nerve transection NMDA receptor-dependent? and… (More)
The influence of the cerebellum on activity of the septal region, hippocampus, and amygdala of cats and rats was determined by obtaining unit recordings from those supratentorial sites with cerebellar stimulation. With stimulation of the postral vermis, fastigial nucleus, and intervening midline folia of the cerebellum, units in the septal region were… (More)
Electron microscopic study of brain tissues of monkeys chronically exposed to psychoactive Cannabis showed widening of the synaptic cleft, electron opaque material in the cleft and in pre- and postsynaptic regions, and some "clumping" of synaptic vesicles. In contrast, tissues of control monkeys showed no ultrastructural changes.
The abundance pattern of s-process nuclides confirms severe mass separation in the Sun and in the parent star that gave birth to the Solar System. The most abundant elements in the interior of the Sun are Fe, Ni, O, Si and S. These five, even-Z elements with high nuclear stability comprize the bulk material of ordinary meteorites and rocky planets close to… (More)
There is not a 1:1 correspondence of the pages here with those in the published paper. 4 _________________________________ Mass separation in the Sun may explain a serious difficulty that has plagued nuclear astrophysics for decades: Why the oxygen to carbon ratio in the Sun's photosphere is only two, O/C ≈ 2. After correcting for mass fractionation, the… (More)
Introduction: Light elements, H and He, covering the solar surface are widely believed to be dominant inside the Sun . Noting that gaseous envelopes may not reflect the Sun's internal composition, Harkins  used analyses on 443 meteorites to conclude that Fe, O, Ni and Si are more abundant. B2FH  explained element synthesis in stars; decades later… (More)