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ex vivo

referring to procedures taking place outside of a living organism. For example, during surgery an organ may be removed, treated ex vivo, and returned to the body. Ex vivo research uses living cells or tissue in a laboratory setting soon after their removal from the organism. These ex vivo cells or tissue are not necessarily cultured, as in in vitro experiments. Compare in vivo. [Latin, literally: “out of life”]

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Psychology term of the day

February 24th 2024

preconscious thinking

preconscious thinking

1. the pictorial, magical, fantasy thinking of children that precedes the development of logical thinking. [introduced in 1938 by Austrian psychoanalyst Otto Fenichel (1897–1946)]

2. in psychoanalytic theory, thinking that takes place at the level of the preconscious. Preconscious thinking has sometimes been cited to explain apparently unconscious, intuitive thought processes, as well as certain kinds of creative leaps and insights.