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Natural Sleep and Its Seasonal Variations in Three Pre-industrial Societies
The sleep period consistently occurred during the nighttime period of falling environmental temperature, was not interrupted by extended periods of waking, and terminated, with vasoconstriction, near the nadir of daily ambient temperature. Expand
An examination of cetacean brain structure with a novel hypothesis correlating thermogenesis to the evolution of a big brain
  • P. Manger
  • Biology, Medicine
  • Biological reviews of the Cambridge Philosophical…
  • 1 May 2006
It is shown that a combination of an unusually high number of glial cells and unihemispheric sleep phenomenology make the cetacean brain an efficient thermogenetic organ, which is needed to counteract heat loss to the water. Expand
Cetacean sleep: An unusual form of mammalian sleep
The suggestion is made that the selection pressure necessitating the evolution of cetacean sleep was most likely the need to offset heat loss to the water from birth and throughout life. Expand
The discovery of central monoamine neurons gave volume transmission to the wired brain
The differential properties of the wiring transmission (WT) and VT circuits and communication channels will be discussed as well as the role of neurosteroids and oxytocin receptors in volume transmission leading to a new understanding of the integrative actions of neuronal-glial networks. Expand
Organization of somatosensory cortex in monotremes: In search of the prototypical plan
The evidence for the existence of four separate representations in somatosensory cortex in the two species of monotremes indicates that cortical organization is more complex in these mammals than was previously thought. Expand
Order‐specific quantitative patterns of cortical gyrification
It would seem that the order is a significant phylogenetic grouping in terms of this neural parameter, from which the authors can predict with a reasonable degree of certainty the GI of any species of a particular order given the brain weight. Expand
Architecture and callosal connections of visual areas 17, 18, 19 and 21 in the ferret (Mustela putorius).
Visual areas 17, 18, 19 and 21 of the ferret can be distinguished on the grounds of cytoarchitecture, myeloarchitecture and cytochrome oxidase reactivity, and with transneuronal tract-tracing fromExpand
Areal organization of the posterior parietal cortex of the ferret (Mustela putorius).
The organization of the parietal areas in the ferret resembles that of the flying fox and might unveil a common organizational plan from which the primate posterior parietal cortex evolved. Expand
Specializations of the granular prefrontal cortex of primates: implications for cognitive processing.
It is demonstrated that the basic neuronal building block of the cerebral cortex, the pyramidal cell, is characterized by marked differences in structure among primate species, and comparison of the complexity of neuron structure with the size of the cortical area/region in which the cells are located revealed that trends in the granular prefrontal cortex (gPFC) were dramatically different to those in visual cortex. Expand
Mammalian Brains Are Made of These: A Dataset of the Numbers and Densities of Neuronal and Nonneuronal Cells in the Brain of Glires, Primates, Scandentia, Eulipotyphlans, Afrotherians and
The relationship between numbers of neurons, neuronal densities and body mass is reexamine, and it is found that in the rest of brain, but not in the cerebral cortex or cerebellum, there is a single scaling rule that applies to average neuronal cell size, which increases with the linear dimension of the body. Expand