Amphibians and ultra high diluted thyroxine--further experiments and re-analysis of data.

Background: A model of thyroxine and metamorphosis of highland amphibians is frequently mentioned as an example of experiments on extremely diluted substances in discussions around 'homeopathy'.

Methods: The model was scrutinized by reanalysing the results of the initial researcher A and a second researcher B as well as of 5 external researchers C between 1990 and 2013. Rana temporaria larvae were taken from an alpine highland biotope.

Heart rate variability and the influence of craniosacral therapy on autonomous nervous system regulation in persons with subjective discomforts: a pilot study.

Background: Subjective discomforts in a preclinical range are often due to imbalanced autonomic nervous system activity, which is a focus of craniosacral therapy.

Objective: The aim of this work was to determine any changes in heart rate variability (HRV) in a study on craniosacral therapy.

Design, Setting, Participants And Interventions: This is a quasi-experimental (controlled) study with cross-over design.

Treatment of highland frogs from the two-legged stage with homeopathically prepared thyroxin (10-11 - 10-21).

The influence of moderately diluted, agitated, i.e., homeopathically prepared, thyroxin solutions (10-11 - 10-21, final concentration in the basin water 0.