. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. l. ; pa, nucl. ciner. ext.; y, ansa lenticularis ; 6, Vicq d1 Azyrs bundle ; e, Corp. mammil-lare : tj, stilus inferior (of Thai.), constituting, together with y, the substantia innominata;A, optic tract. The above three sets of fibres form a reticulated layer offibres upon the outer side of the optic thalamus which isknown as the stratum reticulatum of Arnold. 4. The stilus inferior (inlernus, Meynert) (ij, Fig. 3889),contains radiating fibres from the
. A Reference handbook of the medical sciences : embracing the entire range of scientific and practical medicine and allied science. l. ; pa, nucl. ciner. ext.; y, ansa lenticularis ; 6, Vicq d1 Azyrs bundle ; e, Corp. mammil-lare : tj, stilus inferior (of Thai.), constituting, together with y, the substantia innominata;A, optic tract. The above three sets of fibres form a reticulated layer offibres upon the outer side of the optic thalamus which isknown as the stratum reticulatum of Arnold. 4. The stilus inferior (inlernus, Meynert) (ij, Fig. 3889),contains radiating fibres from the temporal lobes and theisland of Reil. Meynert insists that, in the region of thesubstantia innominata, this bundle is made up of two dis-tinct divisions, the lower fibres passing over the mediansurface of the thalamus upward to the stratum zonale, theupper fibres spreading out in the substance of the thala-mus. 5. Fibres of Yicq d Azyrs bundle (Meynerts stilussuperior), which enter the anterior nucleus, and whichMeynert supposed constituted a direct connection betweenthe fornix and the gyrus fornicatus ; but this is doubtful,. Fig. 3890.—Ideal Section through Brain, showing Cortical Connectionsof Thalamus. (After Edinger.) for the corpus mammillare is interposed in the path ofthe fibres. B. Peripheral Connecting Fibres.—\. Thelhalamic fibresof the optic tract: a, from the substance of the pulvinar(the inner thalamic root); b, from the stratum zonale (theexternal thalamic root). 2. Fibres passing to the regionof the tegmentum. These cannot be easily unravelled, but we can distinguish the fasciculus retroflexus (Mey-nerts bundle) arising in animals, according to v. Gudden,from the ganglion interpeduncular«, and fibres into tlielemniscus. The remaining fibres, chiefly from the lam-inae medullares, are gathered into a mass of fibres lyingin the subthalamic region (Forel) and passing from thereinto the tggmentuin of the eras. But how the} reach theeras is not accurately known.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmedicine, bookyear188
