This paper reports on two studies revealing differences in the EEG asymmetry during cognitive tasks in normals and patients with temporal lobe epilepsy, all right-handed, with right or left focus. The power in different frequency bands was measured and the values were expressed as logarithm of R/L ratios. In the first experiment, recordings were made from F_4, F_3, T_4, T_3 referenced to C_z, while the subjects engaged in visuo-motor tasks. In the second experiment the EEG was recorded trom P_4-O_2 and P_3-O_1 during passive auditory perception tasks. The results show a difference between normals and patients, especially using auditory tasks. The patients with temporal lobe epilepsy often failed to display task-dependent shifts in EEG asymmetry between conditions.
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Analisi automatica dell'asimmetria interemisferica EEG nelle sindromi epilettiche
1984
Abstract
This paper reports on two studies revealing differences in the EEG asymmetry during cognitive tasks in normals and patients with temporal lobe epilepsy, all right-handed, with right or left focus. The power in different frequency bands was measured and the values were expressed as logarithm of R/L ratios. In the first experiment, recordings were made from F_4, F_3, T_4, T_3 referenced to C_z, while the subjects engaged in visuo-motor tasks. In the second experiment the EEG was recorded trom P_4-O_2 and P_3-O_1 during passive auditory perception tasks. The results show a difference between normals and patients, especially using auditory tasks. The patients with temporal lobe epilepsy often failed to display task-dependent shifts in EEG asymmetry between conditions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
