The Experts below are selected from a list of 444813 Experts worldwide ranked by ideXlab platform
Robert R Goodman - One of the best experts on this subject based on the ideXlab platform.
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intracartotid amobarbital procedure Memory Performance and age at first risk for seizures distinguish between lateral neocortical and mesial temporal lobe epilepsy
Epilepsia, 1996Co-Authors: Marla J Hamberger, Thaddeus S Walczak, Robert R GoodmanAbstract:Summary: Purpose: To determine whether intracarotid amobarbital procedure (IAP) Memory-Performance asymmetries and early risk factors for epilepsy distinguish between lateral neocortical temporal lobe epilepsy (LNTLE) and mesiobasal temporal lobe epilepsy (MBTLE). Methods: We studied 10 patients with LNTLE and 22 with MBTLE. All LNTLE patients showed (a) presence of temporal neocortical lesion or lateral seizure onset by intracranial recording, and (b) absence of mesial temporal sclerosis (MTS) by histopathologic analysis. All patients with MBTLE showed (a) video-scalp EEG seizures consistent with mesial TLE, and (b) presence of unilateral MTS by histopathologic analysis. All patients had good surgical outcomes (Engel I or II). Unilateral IAP Memory Performance was defined as percentage of Memory items presented during hemispheric anesthesia that was recognized after recovery. IAP asymmetry scores were the differences in Memory Performance after right and left injections. Results: Mean Memory-asymmetry scores were significantly lower in the LNTLE than in the MBTLE group. An IAP Memory asymmetry of <25% correctly classified seven of 10 patients with LNTLE, and an asymmetry of ≥25% correctly classified 18 of 22 patients with MBTLE. Age at first risk for epilepsy was significantly younger in those with MBTLE than in those with nonlesional LNTLE. Results suggest that both IAP Memory Performance and age at first risk can help distinguish between MBTLE and LNTLE.
Martin Roosli - One of the best experts on this subject based on the ideXlab platform.
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Memory Performance wireless communication and exposure to radiofrequency electromagnetic fields a prospective cohort study in adolescents
Environment International, 2015Co-Authors: Anna Schoeni, Katharina Roser, Martin RoosliAbstract:Abstract Background The aim of this study is to investigate whether Memory Performance in adolescents is affected by radiofrequency electromagnetic fields (RF-EMF) from wireless device use or by the wireless device use itself due to non-radiation related factors in that context. Methods We conducted a prospective cohort study with 439 adolescents. Verbal and figural Memory tasks at baseline and after one year were completed using a standardized, computerized cognitive test battery. Use of wireless devices was inquired by questionnaire and operator recorded mobile phone use data was obtained for a subgroup of 234 adolescents. RF-EMF dose measures considering various factors affecting RF-EMF exposure were computed for the brain and the whole body. Data were analysed using a longitudinal approach, to investigate whether cumulative exposure over one year was related to changes in Memory Performance. All analyses were adjusted for relevant confounders. Results The kappa coefficients between cumulative mobile phone call duration and RF-EMF brain and whole body dose were 0.62 and 0.67, respectively for the whole sample and 0.48 and 0.28, respectively for the sample with operator data. In linear exposure–response models an interquartile increase in cumulative operator recorded mobile phone call duration was associated with a decrease in figural Memory Performance score by − 0.15 (95% CI: − 0.33, 0.03) units. For cumulative RF-EMF brain and whole body dose corresponding decreases in figural Memory scores were − 0.26 (95% CI: − 0.42, − 0.10) and − 0.40 (95% CI: − 0.79, − 0.01), respectively. No exposure-response associations were observed for sending text messages and duration of gaming, which produces tiny RF-EMF emissions. Conclusions A change in Memory Performance over one year was negatively associated with cumulative duration of wireless phone use and more strongly with RF-EMF dose. This may indicate that RF-EMF exposure affects Memory Performance.
Paul Boon - One of the best experts on this subject based on the ideXlab platform.
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Memory Performance during the intracarotid amobarbital procedure and neuropsychological assessment in medial temporal lobe epilepsy the limits of material specificity
Epilepsy & Behavior, 2006Co-Authors: Guy Vingerhoets, Marijke Miatton, Kristl Vonck, Ruth Seurinck, Paul BoonAbstract:Abstract We investigated the relationship between material-specific Memory Performance elicited during the Wada test, or intracarotid amobarbital procedure (IAP), and classic neuropsychological assessment in 89 surgical candidates with refractory medial temporal lobe epilepsy (MTLE). The neuropsychological battery included measures of simple and complex verbal and visual Memory, whereas the IAP material consisted of verbal and dually encodable stimuli. Neuropsychological testing revealed that reduced verbal Memory Performance was associated with left-sided MTLE, whereas visual Memory tasks revealed no differences between patients with left-sided and right-sided MTLE. During IAP, Memory Performance was worse with the ipsilesional hemisphere, regardless of lesion side. Most importantly, Performance on verbal Memory tests was significantly, but moderately, correlated with left hemispheric IAP Performance, indicating that Memory tasks using verbal material are a valid marker of left hemispheric integrity in left language-dominant MTLE patients and significantly predict left hemispheric Memory Performance during IAP. In contrast, Performance on classic visual Memory tests is unrelated to right hemispheric IAP Performance, suggesting that the currently used visual Memory stimuli do not reflect right hemispheric sensitivity.
Paavo Riekkinen - One of the best experts on this subject based on the ideXlab platform.
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Predictors of seizure outcome in newly diagnosed partial epilepsy: Memory Performance as a prognostic factor.
Epilepsy Research, 1999Co-Authors: Marja Aikia, Reetta Kälviäinen, Esa Mervaala, Paavo RiekkinenAbstract:The epilepsy patients whose seizures will prove to be refractory should be identified as early as possible, and thus the need for new prognostic factors of intractable epilepsy is evident. The aim of the study was to investigate predictors of seizure outcome in a multivariate analysis. Neurological, electroencephalography (EEG) and neuropsychological variables were analyzed as potential predictors of epilepsy. Eighty-nine newly diagnosed adult patients with partial epilepsy were, after a prospective 2-year follow-up period, categorized into one of the two groups: patients with satisfactorily controlled epilepsy, and patients with refractory epilepsy. Six variables predicted 2-year seizure outcome: presence of spike focus in EEG, partial complex or mixed seizure type, remote symptomatic etiology, moderately impaired Memory Performance in immediate recall and in delayed recognition of the word list, and age at the time of diagnosis. The correct seizure outcome could be predicted with the model in 94% of newly diagnosed epilepsy patients. The presence of verbal Memory impairment at the time of the diagnosis of partial epilepsy is a significant predictor of seizure outcome and, together with clinical and EEG variables, it predicts seizure outcome in the majority of the patients. Memory Performance as a prognostic factor is of most value in patients with risk of refractory epilepsy and when used in a multidisciplinary setting.
Marla J Hamberger - One of the best experts on this subject based on the ideXlab platform.
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intracartotid amobarbital procedure Memory Performance and age at first risk for seizures distinguish between lateral neocortical and mesial temporal lobe epilepsy
Epilepsia, 1996Co-Authors: Marla J Hamberger, Thaddeus S Walczak, Robert R GoodmanAbstract:Summary: Purpose: To determine whether intracarotid amobarbital procedure (IAP) Memory-Performance asymmetries and early risk factors for epilepsy distinguish between lateral neocortical temporal lobe epilepsy (LNTLE) and mesiobasal temporal lobe epilepsy (MBTLE). Methods: We studied 10 patients with LNTLE and 22 with MBTLE. All LNTLE patients showed (a) presence of temporal neocortical lesion or lateral seizure onset by intracranial recording, and (b) absence of mesial temporal sclerosis (MTS) by histopathologic analysis. All patients with MBTLE showed (a) video-scalp EEG seizures consistent with mesial TLE, and (b) presence of unilateral MTS by histopathologic analysis. All patients had good surgical outcomes (Engel I or II). Unilateral IAP Memory Performance was defined as percentage of Memory items presented during hemispheric anesthesia that was recognized after recovery. IAP asymmetry scores were the differences in Memory Performance after right and left injections. Results: Mean Memory-asymmetry scores were significantly lower in the LNTLE than in the MBTLE group. An IAP Memory asymmetry of <25% correctly classified seven of 10 patients with LNTLE, and an asymmetry of ≥25% correctly classified 18 of 22 patients with MBTLE. Age at first risk for epilepsy was significantly younger in those with MBTLE than in those with nonlesional LNTLE. Results suggest that both IAP Memory Performance and age at first risk can help distinguish between MBTLE and LNTLE.
