Biomedical subjects
Publications and source records attributed to Ahmet Gökçay.
This report presents a patient with Devics neuromyelitis optica associated with primary Sjögrens syndrome. Her first attack was right-sided optic neuritis at age 10 years. Attacks involving both optic nerves and medulla spinalis were recorded during the ensuing years. The diagnosis of Sjögrens syndrome could not be made until the second decade because it was not suspected.
This study was planned to evaluate cognitive functions, especially attention and immediate recall, in children with epilepsy by using P300 and neuropsychological tests, which included visual and auditory number assays. Fifty five patients with partial seizures, 45 patients with generalized seizures and 20 patients with intractable seizures were enrolled in the study. Twenty five healthy children were taken as the control group. The results were as follows: 1. P300 latencies were significantly longer in the intractable and partial groups when compared with the control subjects. 2. The duration of epilepsy, seizure frequency, cerebral imaging pathologies were not significantly correlated with delayed P300 latencies. 3. The results of the visual and auditory number assays test showed significant abnormalities when each of the three groups were compared with the normal controls. 4. Though some subgroups of the neuropsychological tests were correlated with the P300 latencies, an overall significant correlation was not present between them. So, we suggest that neuropsychological tests are more convenient for the assessment of cognitive functions in children with epilepsy than the P300 recordings.
OBJECTIVE: To evaluate atypical electroencephalographic features in subacute sclerosing panencephalitis (SSPE) and to detect its relation to clinical features. METHODS: Twenty-two patients aged 2-17 years (mean 9.4 years) with definite diagnosis of SSPE were studied. Their clinical data and EEG records were reviewed retrospectively. All EEG records were analysed for features of periodic complexes (PCs) in relation to age, age at onset, clinical stage and the rate of progression as well as duration of the disease. RESULTS: Classical periodic complexes of SSPE were found in EEGs of 13 patients (group I). Atypical patterns were observed in EEGs of nine patients (group II). Two new atypical findings were identified: prolonged discharges which include sharp waves and slow waves for 4-7 s followed by suppression for 1-4s; and periodic complexes which consist of four or five sharp waves in every 2 s. We observed atypical EEG patterns were more frequently in Stage III, acute form, and the disease duration was longer than in the typical group. CONCLUSIONS: Atypical EEG patterns in SSPE might be related to the progression of the disease, but this theory needs further longitudinal studies. SIGNIFICANCE: We suggest atypical EEG patterns might be observed more frequently in patients with severe neurologic disability, more rapidly progressive disease and longer duration of disease.
Occipital lobe seizures, as defined by subjective symptoms and objective signs, can be recognized by clinical seizure characteristics in most cases. Visual symptoms such as hallucinations and amaurosis are the most common occipital lobe seizure symptoms. The patients must be classified in order to be able to define the prognosis. In this study, we classified patients with occipital epilepsy as childhood epilepsy with occipital paroxysms (19 patients), idiopathic photosensitive occipital epilepsy (10 patients) and symptomatic occipital epilepsy (25 patients). They were evaluated according to clinical, electrographic and neuroimaging characteristics.
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