274 



INTRODUCTION TO NEUROLOGY 



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Fig. 127. Diagram of the arrangement of the layers of cells and mye- 

 linated nerve-fibers in the cerebral cortex, according to Brodmann. At the 

 left of the figure is shown the arrangement of cells as shown by the Golgi 

 method, in the middle their arrangement as shown by Nissl's method, and at 

 the right the arrangement of nerve-fibers as shown by Weigert's method. 

 /. Lamina zonalis, or plexiform layer, containing tangential nerve- 

 fibers. 



//. Lamina granularis externa, or layer of small pyramidal cells. 

 ///. Lamina pyramidalis, or layer of medium and large pyramidal cells. 



