Table 1.

Percentage of damage to orbital prefrontal cortex (group PFo) and amygdala (group Amyg)

Monkey Left Right Mean
PFo-1 92.5 85.2 88.9
PFo-2 76.1 62.2 69.2
PFo-3 85.4 72.9 79.2
PFo-4 85.0 70.0 77.5
Amyg-1 100 100 100
Amyg-2 98.5 98.5
Amyg-3 94.7 77.3 86.0
Amyg-4 100 70.4 85.2
  • Numerals indicate percentage of damage to orbital prefrontal cortex and amygdala sustained by each of the operated monkeys. PFo-1 to PFo-4, Monkeys with bilateral removals of the orbital prefrontal cortex by aspiration; Amyg-1 to Amyg-4, monkeys with excitotoxic amygdala lesions; Left, left hemisphere; Right, right hemisphere; Mean, average of the values for the left and right hemispheres.