Atypical language organization in temporal lobe epilepsy revealed by a passive semantic paradigm

BMC Neurology

Table 1 Demographics, neuropsychological results and mean LI for each group and contrast

	LMTLE (n = 12)	RMTLE (n = 11)	Controls (n = 19)
Age	40.50 ± 10.11	44.81 ± 13.51	40.68 ± 14.69
Age at epilepsy onset	14.94 ± 14.68	15.96 ± 12.01	-
Years of education	11.08 ± 3.87	11.54 ± 2.91	14.52 ± 4.35
Edinburg Handedness Inventory	1.00 ± 0.00	1.45 ± 1.21	1.11 ± 0.32
IQ	92.50 ± 9.17	97.81 ± 11.19	106.35 ± 12.35
BNT (SS)	48.08 ± 6.15	51.27 ± 5.42	51.42 ± 8.80
Phonemic fluency (SS)*	13.08 ± 6.67	12.81 ± 6.17	15.21 ± 5.74
Semantic fluency (SS)*	18.08 ± 5.46	18.18 ± 4.19	19.78 ± 5.70
Immediate verbal memory (SS)**	30.08 ± 11.10	27.63 ± 6.12	32.68 ± 13.26
Delayed verbal memory (SS)**	14.91 ± 7.93	16.63 ± 5.57	20.42 ± 10.01
Lateralization index
LI: SEN vs. Rest	-0.32 ± 0.31	-0.10 ± 0.40	0.03 ± 0.34
LI: PSEN vs. Rest	-0.41 ± 0.27	-0.16 ± 0.29	-0.08 ± 0.32

LMTLE, Left Temporal Lobe Epilepsy; RMTLE, Right Temporal Lobe Epilepsy; SS, scaled score; IQ, Intelligence Coefficient estimation; BNT, Boston Naming Test; *Subtests of the Barcelona test; **Subtest of the Wechsler Memory Scale III; SEN, Passive Listening to Sentences; PSEN, Passive Listening to Pseudo Sentences.
All values are reported with mean and standard deviation. LIs lower than -0.4 are considered right lateralized, with LIs larger than 0.4 being considered left lateralized. LIs between -0.4 and 0.4 are considered bilateral.; For the handedness the scores were evaluated according to the following scale 1 = Right and 5 = Left; (for the interpretation of the results see methods section).

ISSN: 1471-2377