Table 2.

Presurgical Neurocognitive Performances for the 21 epilepsy patients with RH language dominance who underwent RH surgery for epilepsy at the University of Washington Regional Epilepsy Center.

Group Description	FSIQ	VIQ	PIQ	Language Functioning (% with moderate or greater deficits)	Auditory/Verbal Memory Functioning (% with moderate or greater deficits)	Visual Memory Functioning (% with moderate or greater deficits)
All RH language dominant patients undergoing RH surgery (n =21)	X = 92.4	X = 92.6	X = 93.6	21.1% (4/19)	21.1% (4/19)	10.5% (2/19)
	SD = 14.4	SD = 12.4	SD = 16.5
	Range: 64–125	Range = 72–128	Range = 60–128
Subset of RH language dominant patients with available CSM results (n = 13)	X = 96.1	X = 95.8	X = 97.5	25.0% (3/12)	8.3% (1/12)	8.3% (1/12)
	SD = 14.6	SD = 13.2	SD = 4.8
	Range: 82–125	Range = 84–128	Range = 79–128

Note. RH = right hemisphere; FSIQ = Full-Scale IQ from the Wechsler Adult Intelligence Scale; VIQ = Verbal IQ; PIQ = Performance IQ; CSM = cortical stimulation mapping; X = mean; SD = standard deviation. No differences were observed on cognitive measures between the sample with available CSM data and the total sample using appropriate parametric and nonparametric tests. Moderate dysfunction was defined as greater than 1.5 SD below the mean of normative test data.