ANTERIOR HYPOTHALAMIC LESIONS 
20 18 16 14 12 10 ^ 6 4 2 2 4 6 8 10 12 14 16 18 20 MM. 
G. SIGMOID ANT. 
S. CRUCIATUS 
G. SIGMOID POST 
G. SUPRASYLV. ANT 
G. LATERAL 
SUPRASYLV. MED 
BULB. OLFACT 
G. PROREUS 
G SIGMOID ANT. 
G. ORBIT 
. OLFACT. ANT 
TR. OLFACT. 
L. OLFACT POST 
CUTANEOUS VASOCONSTRICTION DUE 
TO ELECTRICAl. STIMULATION 
CUTANEOUS VASODILATATION DUE 
TO LOCAL HEATING 
Figure 9. Dorsal and ventral views of the frontal lobe and 
hypothalamus of the cat, showing the localization of cutaneous 
vasomotor regions. The anterior and lateral coordinates of the 
Horsley- Clarke system are given in the figure. The size of the brain 
corresponds with that of a cat of 3.0 kg. body weight. 
34 30 26 22 
HORIZONTAL 
CORPUS CALLOSUM 
FORNIC. 
CHIASMA OPT CORP MAMILL. 
INFUNDIBULUM 
A CUTANEOUS VASOCONSTRICTION DUE 
TO ELECTRICAL STIMULATION 
O CUTANEOUS VASODILATATION DUE 
TO LOCAL HEATING 
Figure 10. Median section of the frontal lobe and hypothalamus 
of the cat, showing the localization of cutaneous vasomotor regions. 
The anterior and vertical coordinates of the Horsley-Clarke system 
are given in the figure. The size of the brain is the same as in 
Figure 9. 
163 
