Post-Industrial is a term used to refer to a grouping of music genres which developed in the 1980s, and which are related to the original usage of the term industrial music by Industrial Records through either influence or direct involvement, such as power electronics, death industrial, neofolk, martial industrial, dark ambient, and types of experimental music. Where industrial music was largely defined by the group Throbbing Gristle and the Industrial Records label, a considerable strain of Post-Industrial arguably begins with the post-Throbbing Gristle project Psychic TV in the early 1980s, and ideas hatched at that time. A number of key Post-Industrial music projects directly spun off early Psychic TV, or were closely connected or influenced, by Psychic TV and/or by its associated religious network Thee Temple ov Psychick Youth.