Rudolf Tischner was a physician and parapsychologist who participated in investigations into psychic phenomena. He was involved in experiments conducted by Waldemar von Wasielewski concerning telepathy and clairvoyance. Tischner's own work contributed to the theoretical and experimental exploration of telepathy.

His involvement with Wasielewski centered around the latter's research into occultism, particularly telepathy and clairvoyance, which was influenced by Wasielewski's wife's mediumistic abilities. Tischner was an active participant in these experimental efforts, lending his expertise as a doctor and parapsychologist to the studies. His contributions were part of a broader effort to understand and potentially validate unusual mental capacities through scientific methods.

Rudolf Tischner played a role in the parapsychological research conducted by Waldemar von Wasielewski, particularly concerning phenomena like telepathy and clairvoyance. Tischner, identified as a doctor and parapsychologist, was involved in the experimental testing that Wasielewski undertook in this field. These experiments were often influenced by Wasielewski's wife, Maria von Bloedau, whose reported mediumship provided a focal point for their investigations into telepathic abilities. Tischner's participation lent a scientific and medical perspective to Wasielewski's attempts to validate occult phenomena.

Tischner's academic contributions extended to the theoretical and experimental examination of telepathy. His work, such as 'Über Telepathie und Hellsehen, Experimentaltheoretische Untersuchungen' (1920), aimed to explore the nature of telepathy and clairvoyance through rigorous investigation. This publication is noted in the bibliography of Waldemar von Wasielewski, indicating a connection and mutual interest in the subject matter. Tischner's efforts represent an attempt to apply scientific methodology to understand what he termed 'unusual psychic faculties'.