Brazilian psychiatrist who has carried out empirical studies of mediumship and spiritual experiences.

American parapsychologist (1942-2004), chair of Edinburgh's Koestler Parapsychology Unit,  many of whose doctoral students now teach parapsychology in British universities.

Study on mediumship by an Italian psychiatrist and psychical researcher (1852-1929), focusing in particular on Eusapia Palladino, with the emphasis on clinical and psychological aspects. 

American cognitive neuroscientist, author and educator who has carried out parapsychological studies, notably on precognition and presentiment effects.

American author (1903-1969) of books about his out-of-body experiences, which he said occurred throughout his life, and which by experiment he found he could largely control.  

Scottish philosophy professor (1916-1989) who participated in telepathy experiments and published commentary on psychical research.

American psychologist, parapsychologist and author (1895–1979) who made major contributions to psychology and parapsychology in a career that spanned six decades.

Australian-British classics scholar (1866-1957), significant in the literature of psychical research for his striking success in informal telepathy experiments.  

Nineteenth century poet, investigator and thinker, whose posthumously-published book Human Personality and Its Survival of Bodily Death (1903) offers a theory of consciousness that encompasses psychic experience.

German biologist and parapsychologist, whose psi research has focused on anomalous death-related and biological phenomena such as terminal lucidity and sudden hair whitening in response to stress.