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Acetylcholinesterase (AChE) and choline acetyltransferase (CHAc) activities were studied by quantitative histochemical (AChE) as well as biochemical methods (AChE, ChAc) in certain cortical brain areas in rats after stereotaxic lesions had been placed in several structures of the basal forebrain. After lesioning the magnocellular nuclei of the substantia(More)
Flow induced mineral alignment in the Earth s mantle affects the nature of seismic wave propagation. Since measurements of seismic travel-time and shear wave splitting are a key means by which the structure of the upper mantle can be imaged, it is important to understand the factors that contribute to variability in elastic properties. Seismic anisotropy(More)
In brains of female albino rats the influence of septal and paraseptal lesions on the activity of acetylcholinesterase in the limbic cortex (hippocampal formation, regio limbica anterior et posterior, regio retrosplenialis) was investigated topochemically and also by a quantitative histophotometrical method. On the 4th day after bilateral lesion of the(More)
In rats with extra- or intracranial dissection of the visual pathway the activities of acetylcholinesterase (AChE) and choline acetyltransferase (ChAc) were determined in retina, optic nerve and optic tract quantitatively by bio- and histochemical methods after one or five weeks of survival time. One week after intracranial (chiasma-near) dissection of the(More)
  • H Wenk
  • 1989
Approximately 80% of the activities of cortical cholinergic marker enzymes are restricted to afferent fibres and terminals of the magnocellular basal nucleus of Meynert (NbmM) (Wenk et al. 1980). In the evolution this nucleus strongly follows a phylogenetic gradation (Brockhaus 1942) which is positively correlated to the cerebralization, i.e. the(More)