Table 3.

Pre- and postoperative intellectual assessment scores.

RAVL test (N = 12)	Preoperation (mean ± SD)	Postoperation (mean ± SD)
Immediate recall scores	22.1 ± 7.5	26.3 ± 8.1
Delayed recall scores	3.4 ± 1.2	5.2 ± 1.4*
ROCF test (N = 12)
Copy scores	20.1 ± 4.1	23.3 ± 3.2*
Delayed recall scores	13.3 ± 2.8	17.1 ± 2.7*
HRB ( N = 6)	0.49 ± 0.18	0.36 ± 0.19

*Significantly different as compared with the value of preoperation (P < 0.05).

RAVL: Rey Auditory-Verbal Learning Test. ROCF: Rey-Osterrieth Complex Figure Test. HRB: Halstead-Reitan Battery.