Attenuation of visual activity in the superficial layers (SLs), stratum griseum superficiale and stratum opticum, of the superior colliculus during saccades may contribute to reducing perceptual blur during saccades and also may help prevent subsequent unwanted saccades. GABAergic neurons in the intermediate, premotor, layer (SGI), stratum griseum intermedium, send an inhibitory input to SL. Th...

Intracellular recording and HRP injection were used to characterize retinocollicular axons in the hamster. Eighteen retinotectal axons were filled with HRP. The type of axon recovered most often (N = 10) had a receptive field with center-surround organization, gave sustained responses to flashed spots, had linear spatial summation, and responded only to more slowly moving stimuli. These fibers ...

The assessment of caesium-137 accumulation in parts fungi fruiting bodies Leccinum aurantiacum (Bull.) Gray a mixed spruce-aspen forest on sod-podzolic soil was carried out. Average specific activity cesium-137 for caps is 1814±112 Bq/kg and stems 873±73 Bq/kg. It found that the does not exceed permissible values, but significantly differs between cap stem fruit bodies. coefficients from vary 4...

It has often been argued that the search for answers to ageold conundrums cannot always be found in scientific study. Beliefs are just what they are and should be left alone. But this instance does beg the question: Could the tokoloshe be the experience of a stimulated indusium griseum? And do we here in Africa have a pre-programmed tokoloshe homunculus waiting to be activated in times of distr...

Nuclear factor I (NFI) genes are expressed in multiple organs throughout development (Chaudhry et al., 1997; for review, see Gronostajski, 2000). All four NFI genes are expressed in embryonic mouse brain, with Nfia, Nfib, and Nfix being expressed highly in developing cortex (Chaudhry et al., 1997). Disruption of the Nfia gene causes agenesis of the corpus callosum (ACC), hydrocephalus, and redu...