260 
NAOKI 
TABLE 9 
SUGITA 
Giving the average cortical thickness for several lobes and regions (with typical 
cell lamination) of the cerebral hemisphere as given by different authors, and the 
order of localities according to the cortical thickness, together with the difference 
in thickness between the temporal and occipital regions. 
R = regio Rolandica, 
F = lobus frontalis, P = lobus parietalis, O = lobus occipitalis, T = lobus 
temporalis. Based on table 8 in this paper 
DONALDSON ee CAMPBELL CAMPBELL BRODMANN BRODMANN 
EAS (791) (795) (705) (705) (’08) (708) 
(Cell) (Cell) (Cell) (Fiber) (Cell) (Fiber) 
mm. mm. mm. mm. mm. mm. 
Regio Rolan- 
GiCareer ers 2.92 2.34 2.48 Dy 2.74 2.93 
Lobus frontalis 2EO2 2.92 2.46 D. 3.50 3.84 
Lobus parieta- 
las Aen vat cee: 2.43 2.44 Deals 3.17 3 le 
Lobus occipita- 
Listeners 2.59 2.09 2.16 1.96 2.47 2.54 
Lobus tempora- 
lise ease eee ce: Bi PAll 2.49 2.64 2.29 3.48 3508 
Average...... 2.91 2.45 2.43 Drealiey 2.92 3.16 
Order of the 
above five 
localities as 
to the thick- 
Meco ncdeuc TERO? || ETPRO. || TEPRO)| TREO} FLEEROo AREER 
Difference be- 
tween T and 
OE RED IAS 0.62 0.40 0.48 0.33 1.01 LSPA 
frontal and temporal regions have in all cases the thickest cortex 
and the occipital region is the thinnest, while the position for 
the cortex of the parietal and Rolandic regions is less fixed. 
These thickness relations support the earlier statement made 
by me for the rat cortex that the thickness diminishes from the 
frontal to the occipital pole and from the dorsal to the ventral 
aspect. 
Brodmann (’08) has concluded from his careful study that 
regional characteristics for the cortical thickness clearly exist. 
‘Diese sind in allen normalen Gehirnen gesetzmissig und kon- 
