(attributive) Applied to a particular phenomenon of visual perception.

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 phenomenon of visual perception caused by staring at a uniform field of colour, leading to a sensation of blindness and sometimes to hallucinations.

plural of ganzfeld experiment

plural of ganzfeld effect