By Prof. Dr. Heiko Braak (auth.)
This is a well timed opus. such a lot folks now are too younger to recollect the disagreeable ring of a polemic among those that produced "hair-splitting" parcellations of the cortex (to paraphrase one in every of O. Vogt's favorite expressions) and people who observed the cortex as a homogeneous matrix sus taining the reverberations of EEG waves (to paraphrase Bailey and von Bonin). One camp accused the opposite of manufacturing bogus arrangements with a paint brush, and the opposite direction round the accusation used to be that of bad eye-sight. Artefacts of varied kinds have been invoked to provide an explanation for the opponent's errors, starting from perceptual results (Mach bands crispening the areal borders) to terrible fixation supposedly because of perfusion too quickly (!) after dying. i've got heard such a lot of this at once from the protagonists' mouths. The polemic used to be no longer resolved however it has mellowed with age and eventually light out. i used to be relieved to work out that Professor Braak elegantly avoids dis cussion of an extrememist guideline, that of "hair-sharp" areal obstacles, which makes little experience in developmental biology and is beside the point to neurophysiology. It was once truly harmful to cortical neuroanatomy, due to the fact its negation resulted in the concept that structurally distinctive parts will not be in any respect existent. but, no one might deny the truth of 5 palms on one hand whether the certain project of each epidermal mobile to 1 finger or one other is clearly impossible.
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Additional info for Architectonics of the Human Telencephalic Cortex
Braak, 1974a). The stratum oriens seems unchanged. 3 The Subiculum The subiculum (designation introduced by Burdach, 1819) forms the third part of the hippocampal formation. It is located between the ammonshorn on the one side and the presubiculum on the other. Also the subiculum undergoes considerable elaboration with phylogenetic advance (Stephan, 1975). At least in the primate brain, the subiculum appears to be the only source of efferent fibres from the hippocampal formation to other parts of the telencephalic cortex and contributes to subcortical fornix fibres as well (Rosene and van Hoesen, 1977; Schwerdtfeger, 1979) (Fig.
The parcellation is based only on the pigment preparations since Fig. 10. Upper third Transsubicular subregion of man. At left hand margin the mole- ~ cular layer is followed by the parvopyramidal presubicular layer (prs) and the multiform layer (area transsubicularis lateralis). As one proceeds towards the right hand margin irregularly spaced clouds of the third isocortical layer (Ill) become more and more prominent. The parvopyramidallayer sweeps downwards and lies finally between the isocorticallayers III and VI (area transsubicularis medialis).
1 . , . ~; ~~~~: ,.... ' :):\.. ' ''"" •• ,.. • (r~ ~ _ ~"_,~ . ~y. ,~. '. ~. '... -....... ; '. '. 'li;;~, ,.... '. :. -. < ". ~. - ,. "~~. i; ;~j:-:,. "'... ,"'" . '3 " ". JI".... , ",. , < ... ,' '. ". ' ,.. '" ".. " • < ...... ' . - .. ,'''' ". ~·", •• ~ ....... ; /. '!. '. ,,' '. ,. ,. ' . ". -, CA 1 ' . ',.. \1' \. • ,....... - CA2 1mm . 5. Legend see p. 26 Fig 28 The Allocortex nucleus. The perikaryal cytoplasm is confined to a narrow rim which is poor in basophilic material and contains only a few feebly tinged pigment granules.
Architectonics of the Human Telencephalic Cortex by Prof. Dr. Heiko Braak (auth.)