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This article guides the design and execution of a small research project using existing clinical data. The most important point in experimental design is to identify potential difficulties and limitations before you start by 1) review of published studies, 2) use of your clinical experience and 3) review of individual case records. Some of these can be(More)
This article describes mobile virtual healthcare communities as a solution for meeting cancer patients' needs for information and interaction. After a short introduction into the German healthcare system and its potential starting points for virtual communities, the authors focus on cancer patients. They analyse their situation through field studies and(More)
The paper describes empirical findings about Chief Information Officers (CIO's) in Germany. Firstly the CIO concept in general is reviewed in brief and other surveys found in the literature are presented. Afterwards study results of the position of the CIO in Germany based on empirical data of an online questionnaire in a German online magazine for CIO's(More)
The regulatory mechanism for the interaction of agonist and antagonist muscles is not still clear. In these studies we investigated reciprocal inhibition during voluntary contraction and thinking about movement by using transcranial magnetic stimulation (TMS) and the H reflex technique. Magnetic stimuli, with intensities 10% above threshold, were delivered(More)
Two experiments using transcranial magnetic stimulation (TMS) were undertaken to investigate facilitatory effects of thinking about a specific movement without voluntary discharges on motor-evoked potentials (MEP). First, surface electromyographic (EMG) responses from the abductor pollicis brevis were recorded with maximal stimulator output in the three(More)
This investigation examined the effects of psychosocial influences upon vagal cardiac activity. In this crossover, counter-balanced study, 15 subjects were assessed for vagal cardiac activity before and during a presentation in the presence and/or absence of an audience. Electrocardiograms (ECG) were collected throughout the epochs of interest, using a(More)
Mother-infant interaction was observed in Long-Evans and Fischer 344 rats after fostering within or across strains. Interactions immediately following introduction of foster pups to the cage as well as undisturbed interactions with resident litters were examined. Some differences were related to alien status, some to strain of pups, and others to strain of(More)
In this paper we describe mobile virtual healthcare communities as a solution for meeting cancer patients information and interaction needs. After an introduction into the healthcare system and its potential starting points for virtual communities, we focus on cancer patients. We analyse their situation through field studies and identify information and(More)
Because respiration modulates autonomic activity, we determined the magnitude of perturbation of changing breathing frequency and tidal volume on metabolic, hemodynamic, psychometric, and R-R interval power spectral parameters. Seated subjects breathed at three different rates and five different volumes with each of the different rates. Breathing rates and(More)