Knut Dalen

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Righthanded and lefthanded 7-year-old children (both boys and girls) were compared for dichotic listening performance under free report and forced attention conditions. Previous findings from our laboratory have shown that, while adults reverse the right ear advantage (REA) during the forced-left condition, children do not. Since the finding in children was(More)
The aim of the present study was to investigate whether removal of all amalgam fillings was associated with long-term changes in health complaints in a group of patients who attributed subjective health complaints to amalgam fillings. Patients previously examined at the Norwegian Dental Biomaterials Adverse Reaction Unit were included in the study and(More)
The purpose of the present experiment was to investigate lateralized effects of concurrent verbal and nonverbal tasks on right- and left-hand finger-tapping. In addition to the verbal vs. nonverbal dichotomy, both motor and sensory tasks were used. It was predicted that a verbal motor task (reading aloud) would lead to more inhibitory interference for(More)
Memory and psychophysiological variables in persons with self-reported reactions to dental amalgam (amalgam patients: N=26) and in persons without such symptoms (controls: N=21) were compared. The groups were matched regarding age, education, and amount of amalgam. Wechsler Memory Scale-Revised was obtained for all subjects and compared to amalgam points in(More)
The aim of this population-based study is to investigate IQ and IQ-related factors in children with hydrocephalus (HC). Psychometric intelligence was assessed in subjects below the age of 7.3 years (N=52, F=18, M=34) with the Wechsler Preschool and Primary Scale of Intelligence - Revised (WPPSI-R) and for children above the age of 7.3 years (N=29, F=6,(More)
In the present study we investigated the effects of concurrent verbal (reading) and nonverbal (humming) cognitive tasks on right- and left-hand finger-tapping in relation to hemispheric asymmetry in right- and left-handed females and males. The aim of the study was to investigate effects of attending either to the cognitive or manual task, and effects of(More)
The effect of electromyographic (EMG) biofeedback on frontalis and masseter muscle activity was compared with control conditions in two groups of patients with a diagnosis of myofascial pain dysfunction (MPD) syndrome. Patients were selected on the basis of clinical symptoms, radiographic evaluation, and a clinical examination. Depressed patients and(More)
Cognitive functioning was compared in 29 children diagnosed with fetal alcohol syndrome (FAS), 35 children with fetal alcohol effects (FAE), and 66 psychotropic drugs-exposed (PDE) children using Wechsler tests and the neuropsychological test battery NEPSY. In the FAS group, verbal IQ (VIQ=78), performance IQ (PIQ=77), and full scale IQ (FSIQ=75) were(More)
In this article, we explore how patients with health complaints attributed to dental amalgam experienced and gave meaning to changes in health complaints before, during, and after removal of all amalgam fillings. We conducted semistructured qualitative interviews with 12 participants from the treatment group in a Norwegian amalgam removal trial. Interviews(More)
OBJECTIVE The aim of the present study was to investigate the predictive value of neuropsychological tests for on-road evaluation outcome after inconclusive assessment. METHODS AND PROCEDURES Thirty-five patients were assessed neurologically, neuropsychologically by traditional clinical tests and by on-road evaluation. Simple univariate tests, logistic(More)