R F Byring

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A total of 23 13-year-old boys with spelling disabilities and 21 matched controls were studied. EEG was recorded for visual and quantitative analysis, including FFT band powers and normalized slope descriptors (NSD). Visual analysis showed general excess of slow activity, as well as an excess of temporal slow wave activity in the index group. Quantitative(More)
Twenty-three poor spellers (average age 13 years) and 21 matched controls were studied. The EEG from 6 derivations was quantified using Hjorth's parameters 'Activity' and 'Mobility,' from which product-moment correlations were calculated between derivations. Cross-correlations were analogously calculated from EEG amplitude values. In poor spellers higher(More)
The sudden infant death syndrome has multiple etiologies. Some congenital myasthenic syndromes can cause sudden infant death syndrome by apnea, but the frequency of this etiology is unknown. We report here a young patient with sudden respiratory crises culminating in apnea followed by recovery, against a background of no or variable myasthenic symptoms(More)
EEG evoked potentials were studied in 23 young adolescent poor spellers and 21 controls. Findings typical of poor spellers were long auditory evoked potential (AEP) latencies and low amplitudes of early AEP deflections. A high frequency of spelling errors concerning the word as a whole was associated with low AEP P50 and P300 amplitudes. Poor reading was(More)
A group of 34 male adolescents with poor results on a spelling test and 34 controls were examined neurologically and neuropsychologically. The index group was inferior to the controls mainly in tasks involving fine motor control of the left hand, but also in auditory non-verbal sequential information processing and phoneme manipulation tasks. The manual(More)
OBJECTIVE To find out whether 14-16-year-old pupils with visual perception disabilities have atypical EEG activation patterns during visual discrimination. METHODS EEG correlation indices (EEGCIs), based on the waveform characteristics of two EEG signals, were used as measures of slow joint activation of cortical regions during visual discrimination in(More)
OBJECTIVE To find out whether 14-16 year old reading and writing impaired pupils have atypical EEG activation patterns during reading. METHODS EEG correlation indices (EEGCIs), based on the waveform characteristics of two EEG signals, were used as measurers of slow joint activation of cortical regions during reading in pupils with reading and writing(More)
Sixty young male patients with insomniac disorders were treated with nitrazepam 5 mg or triazolam 0.5 mg in a double-blind single night cross-over study. The results were favourable for triazolam in all the sleep parameters assessed. The significance of an hypnotic with a short life and its use in clinical practice is discussed.
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