<abstract xmlns="http://www.w3.org/1999/xhtml"><sec id="j_joepi-2015-0024_s_001"><h3>Introduction</h3><p>The traditional view of cognition in idiopathic or genetic generalized epilepsy (GGE) is that “one size fits all” i.e. only very mild generalized impairment might be detected, if any. This paper describes four case studies of cognitive functioning in GGE patients with photosensitivity and reflexive seizures.</p></sec><sec id="j_joepi-2015-0024_s_002"><h3>Aim</h3><p>The aim was to discover whether each individual’s set of cognitive deficits varied in accordance with his/her other clinical phenomena such as photosensitivity and kinds of reflexive seizures.</p></sec><sec id="j_joepi-2015-0024_s_003"><h3>Method</h3><p>Neurological and cognitive performance was assessed by comprehensive evaluation of each patient based on interviews, neurologist’s EEG reports and neuropsychological tests. Assessment of cognitive domains included estimated pre-morbid I.Q. based on reading ability and demographic norms, current I.Q., attention factors, verbal memory, visual memory and executive functions.</p></sec><sec id="j_joepi-2015-0024_s_004"><h3>Results</h3><p>Clinical signs and investigative studies indicated that two cases typically began reflexive seizure episodes with facial myoclonia which evolved into tonic-clonic convulsions or generalized myoclonic seizures. These patients had widespread attention and working memory deficits, some severe, together with lowered intelligence scores. In contrast, two other cases (with no history of myoclonus) had generalized reflexive seizures originating in the occipital lobes, very mild localized visual dysfunction and high intelligence.</p></sec><sec id="j_joepi-2015-0024_s_005"><h3>Conclusions</h3><p>The systematic variation in extent and nature of cognitive dysfunction illustrated in these cases with reflexive seizures (preceded by myoclonia or visual phenomena) would be explained by a more recent conceptualization of GGE as encompassing regional differences in variable hyperexcitability located at cortical levels or functional neural networks.</p></sec></abstract>

IntroductionThe traditional view of cognition in idiopathic or genetic generalized epilepsy (GGE) is that “one size fits all” i.e. only very mild generalized impairment might be detected, if any. This paper describes four case studies of cognitive functioning in GGE patients with photosensitivity and reflexive seizures.AimThe aim was to discover whether each individual’s set of cognitive deficits varied in accordance with his/her other clinical phenomena such as photosensitivity and kinds of reflexive seizures.MethodNeurological and cognitive performance was assessed by comprehensive evaluation of each patient based on interviews, neurologist’s EEG reports and neuropsychological tests. Assessment of cognitive domains included estimated pre-morbid I.Q. based on reading ability and demographic norms, current I.Q., attention factors, verbal memory, visual memory and executive functions.ResultsClinical signs and investigative studies indicated that two cases typically began reflexive seizure episodes with facial myoclonia which evolved into tonic-clonic convulsions or generalized myoclonic seizures. These patients had widespread attention and working memory deficits, some severe, together with lowered intelligence scores. In contrast, two other cases (with no history of myoclonus) had generalized reflexive seizures originating in the occipital lobes, very mild localized visual dysfunction and high intelligence.ConclusionsThe systematic variation in extent and nature of cognitive dysfunction illustrated in these cases with reflexive seizures (preceded by myoclonia or visual phenomena) would be explained by a more recent conceptualization of GGE as encompassing regional differences in variable hyperexcitability located at cortical levels or functional neural networks.

Variations in cognitive functioning in genetic generalized epilepsy: four case studies

Journal of Epileptology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

IntroductionThe traditional view of cognition in idiopathic or genetic generalized epilepsy (GGE) is that “one size fits all” i.e. only very mild generalized...

Variations in cognitive functioning in genetic generalized epilepsy: four case studies

Publié en ligne: 31 mars 2015

Pages: 25 - 37

Reçu: 20 janv. 2015

Accepté: 16 mars 2015

DOI: https://doi.org/10.21307/joepi-2015-0024

Mots clés
neurocognitive dysfunction, photosensitivity, reflexive seizures, areas of variable hyperexcitability

© 2015 Evangelina E. Ballini et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Variations in cognitive functioning in genetic generalized epilepsy: four case studies

Publié en ligne: 31 mars 2015

Pages: 25 - 37

Reçu: 20 janv. 2015

Accepté: 16 mars 2015

DOI: https://doi.org/10.21307/joepi-2015-0024

Mots clésneurocognitive dysfunction, photosensitivity, reflexive seizures, areas of variable hyperexcitability

© 2015 Evangelina E. Ballini et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
neurocognitive dysfunction, photosensitivity, reflexive seizures, areas of variable hyperexcitability