What is "ganzfeld experiment"

n. An experiment in parapsychology that attempts to gauge telepathic ability by putting a subject into sensory deprivation and afterwards asking him/her to identify an object that was observed by somebody else during that period.

A ganzfeld experiment (from the German for “entire field”) is a technique used in parapsychology which claims to be able to test individuals for extrasensory perception (ESP). The ganzfeld experiments are among the most recent in parapsychology for testing telepathy.

Consistent, independent replication of ganzfeld experiments has not been achieved.