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Original Research

Ann Med Res. 2005; 12(2): 119-123


Cerebral Dominance in Epileptic Patients

Recep Aygül*, Nuri Koçak*, Orhan Deniz*, Asuman Orhan*, Hızır Ulvi*, Kenan Gümüştekin**

.




Abstract


 

Objective: High left-handedness, weak right-handedness, high cross-dominance, pathologic right-handedness and

bilateral atypical language dominance are implicated in epilepsy. Therefore, we aimed to determine hand, foot and eye

preferences in epileptic cases.

Method: For this purpose, 25 primary generalized epilepsy and 33 cryptogenic partial epilepsy cases were taken in this

study. One hundred forty-one similarly age and sex-matched healthy subjects were taken as the control group. The hand

preference was assessed by Annet’s handedness questionnaire. Additionally, two functional preferences (footedness, and

eyedness) and postural lateral preferences (hand-clasping, hand-clapping, and arm-folding) tests were performed in all

subjects.

Results: In Annet’s handedness questionnaire, right handedness was determined in 88.1%, left handedness in 7.9% and

mixed handedness in 4% of the epileptic cases. These values were 89.6%, 6.4% and 4%, respectively, in the control

groups. There was not any significant difference between the groups. In arm-folding test, the left hand preference was

found to be higher in epileptics (p < 0.001).

In both epileptic groups, male patients had increased left hand preference when compared to female ones in Annet’s

questionnaire (p < 0.005). At the same time, the family history of left handedness and left hand preferences in Annet’s

questionnaire were frequent in partial epilepsy group than in generalized epilepsy group (p < 0.05).

Conclusion: In the evaluation of Annet’s questionnaire, although there was not any significant difference between the

patient and control groups, that male epileptics and partial epileptics high preferences left hand may indicate abnormal

cerebral dominance.

Key Words: Epilepsy, Handedness, Cerebral dominance






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