Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Pessenhofer, H; Kerschhaggl, P; Schwaberger, G.
Biomedical technique in physiology (author's transl)
WIEN MED WOCHENSCHR. 1979; 129(13): 361-364.
Web of Science
PubMed
- Führende Autor*innen der Med Uni Graz
- Pessenhofer Herfried
- Co-Autor*innen der Med Uni Graz
- Schwaberger Guenther
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- Abstract:
- On the basis of two examples of projects being realized in the department of physiology in Graz the use of engineering methods in physiological research is demonstrated. The first example presents a survey of the use of system-theoretical methods for the investigation of overall regulation of circulation under working conditions. Using two test-signals (impulse input, random input) for experimental identification, the impulse response of heart-rate to changes in work load was obtained. The impulse responses of the volunteers were then characterized by a set of three parameters, allowing statistical evaluation, classification for diagnostic means and verification of hypotheses. The second example deals with an investigation of the signal structure of ultrasound-CW-Doppler-systems. Basing on the general Doppler-principle, which is already in use in angiology it was tried to quantify the determinants of the audio-signal, describing it by statistical functions and by experiments on simple models (tube-models). The goal of the experiments is a quantitative assessment of volume-flow and an enhancement of information about the scattering medium (rheological properties of blood).
- Find related publications in this database (using NLM MeSH Indexing)
- Doppler Effect -
- Exertion -
- Heart Rate -
- Homeostasis -
- Humans -
- Physiology - methods
- Ultrasonics - methods