A Dictionary of psychological medicine giving the definition, etymology and synonyms of the terms used in medical psychology, with the symptoms, treatment, and pathology of insanity and the law of lunacy in Great Britain and Ireland . t Broca associates thefaculty of language. 2. The middle frontal convoltdion(2,2,2). _ _ 3. The superior frontal convolution(3> 3? 3) consists of two minor divisions,one of which blends with the upper partof the first ascending convolution; theother bounds the great longitudinal fissureanteriorly. (The middle and superior convolutionsare so intimately connecte
A Dictionary of psychological medicine giving the definition, etymology and synonyms of the terms used in medical psychology, with the symptoms, treatment, and pathology of insanity and the law of lunacy in Great Britain and Ireland . t Broca associates thefaculty of language. 2. The middle frontal convoltdion(2,2,2). _ _ 3. The superior frontal convolution(3> 3? 3) consists of two minor divisions,one of which blends with the upper partof the first ascending convolution; theother bounds the great longitudinal fissureanteriorly. (The middle and superior convolutionsare so intimately connected that it isoften difficult to distinguish betweenthem.) Gratiolet observed these convolutionsin their simplest form in idiots ; those onthe right and left side presenting a re-markable symmetry. Such symmetryis never observed in the normal brain ofthe white man. The superior convolution,twisted in a thousand directions and oftendivided into two secondary ones, is neverlike its fellow. The second convolutionpresents irregularities still more striking;it might be said that Nature by a lasteffort, for the purpose of accommodatingmore convolutions at this region, has, if Convolutions of the Brain [ 269 ] Convolutions of the Brain. Convolutions of the Brain [ 270 ] Convolutions of the Brain I may so express myself, crumpled andcrowded them together {op. cit. p. 60). 4. The Ascending Frontal Convolution(4, 4, 4).—Gratiolet called this the &&-cending jja?-ie^aZ convolution because it lieson the parietal side of the ascending limbof the fissure of Sylvius (S, S). II, The Parietal lobe (Par, Figs. Iand 2). 1. The Ascending Parietal Convolution(5> 5? 5)-—Above and behind, it formsa lobule (5, 5)» bounded posteriorlyby the parieto-occipital fissure. Thisis connected with the occipital lobe byGratiolets superior connecting convo-lution (pli superieur de passage). To-gether they form on each side of thelongitudinal fissure numerous folds. 2. The Supra-marginal Convolutionand Lolule
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