By Prof. Dr. Heiko Braak (auth.)

This is a well timed opus. so much 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 those that 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 wrong way round the accusation was once that of negative eye-sight. Artefacts of varied types have been invoked to give an explanation for the opponent's blunders, starting from perceptual results (Mach bands crispening the areal borders) to bad fixation supposedly because of perfusion too quickly (!) after demise. i've got heard so much of this without delay from the protagonists' mouths. The polemic was once no longer resolved however it has mellowed with age and eventually pale 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 feel in developmental biology and is beside the point to neurophysiology. It used to be really damaging to cortical neuroanatomy, given that its negation resulted in the concept structurally precise parts are usually not in any respect existent. but, not anyone could deny the truth of 5 hands on one hand no matter if the precise task of each epidermal cellphone to 1 finger or one other is clearly impossible.

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Retrospl. paraspl. med. (proiso) (iso) (periallo) retrospl. lat. (proiso) retrospl. intermed. (proiso) of internal subicular pyramids (Fig. 14). These allocortical structures represent the supracommissural parts of the hippocampal formation (Stephan, 1975). The adjoining periallocortical ectosplenial field (Figs. 14, 15) hardly shows a clear lamination. The molecular layer is filled with myelinated fibres. An outer main stratum (III) can just be distinguished from an inner one which seemingly consists of only the multiform layer (VI).

Prpp trl ee Fig. 12, Legend see p, 47 trm eo 47 The Transentorhinal Subregion proisocortex allocortex

17. Frontal section through subcallosal parts of the anterogenual region. Note the ~ conspicuous population of pigment-laden nerve cells within the broad internal tenia. Lm). call. corpus callosum; eg area ectogenualis; pg area paragenualis; Te and Ti outer and inner tenia; PIlI, P Va, P VI layers of pigmented nerve cells The Anterogenual Region 57 c. call. a agm pg Fig. 17. Legend see p. 56 500IJm 58 The Proisocortex The anterogenual core fields correspond to only anterior parts of field 24 and posterior parts of field 33 (Brodmann, 1908, 1909), parts of the fields 17-24 (Yogt, 1910), LA} and LA2 (von Economo and Koskinas, 1925), or IRb and IRe (Rose, 1928).