Words similar to pyramidal
Example sentences for: pyramidal
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Thus, for example, in the former, we found NK-ir fibers in the superior colliculus, the restiform body, the pyramidal tract, and in the pontine nuclei, in which in the cat no immunoreactive fibers were found [ 15 ] . Comparing the distribution of cell bodies containing NK in both cat and human brainstems, it seems that the distribution is widespread in the feline (see [ 15 ] ). In both species NK-ir perikarya were found in the periaqueductal gray and in the inferior colliculus.
Less is known about the effects of carbenoxolone on GJs, although it has been proposed that glycyrrhetinic acid, to which carbenoxolone is related, binds directly to connexin molecules causing a conformational change leading to a closure of the junction [ 7 ] . Modeling studies indicate that neuronal synchronization can be mediated by low densities of GJs either between dendrites, as long as these dendrites are excitable [ 10 ] , or between the axons of pyramidal cells [ 11 ] . Furthermore, the electrotonic coupling could be promoted during epileptogenesis [ 12 13 ] .
Topped by a newly gilded pyramidal tip, the 23-m (75-ft) pink granite Obelisk of Luxor from the temple of Ramses II dates back to 1300 b.c. and was erected here in 1836.
In this manner, inactive cells are brought closer to threshold, enhancing their opportunity to firing together [ 29 30 31 ] . The extracellular resistance is the major determinant of field-effect strength [ 32 ] . Since the extracellular volume fraction in CA1 stradium pyramidal is only 12% compared with approximately 18% in CA3 and granule cells [ 33 ] , the CA1 pyramidal cells are particularly susceptible to field effects.
The variation in neuron-packing density with volume contrasts somewhat with the report of Abusaad and colleagues [ 36], who found no significant differences (P = .06) in neuronal packing density in the dentate gyrus cell layers of the hippocampus among the three mouse strains that they examined, but did see a significant difference in the pyramidal cell layers.
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