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The visual mind: A special issue in honour of Glyn Humphreys

There would be no Visual Cognitionwithout Glyn Humphreys. Glyn founded this journal almost a quarter of a century ago, in 1994. In his first editorial he expressed his vision for the future, pointing out exponential growth in cognitive research and the need for a journal focusing on high-level vision; a journal for topics such as object perception and face recognition, mental imagery and spatial thinking, visual attention, reading and eye movement control, and the interaction between vision and action. The first volume carried papers by Gordon Shulman on the role of cognitive control in perceiving rotation, Lana Trick and Zenon Pylyshyn on visual enumeration, Rob Ward with Susan Goodrich and Jon Driver on how grouping affects visual extinction, and Tim Brennen on face perception. Ever since, the journal has filled a muchvalued niche. Glyn had a keen eye for where the field was heading, and what it needed. Service to the field was his second nature, be it as teacher, head of school, reviewer, editor, organizer of numerous symposia and other gatherings, or board member of every relevant evaluation and funding committee. I have the saddening honour to write this editorial in his footsteps. Glyn died suddenly on 14 January 2016, leaving behind not only a tremendous feeling of loss, but also a tremendous legacy. In a way, there is no visual cognition without Glyn Humphreys. With his enormous creativity, breadth and depth of research, there is virtually no area in vision science that he has not had an impact on. Glyn will be remembered as probably the most versatile scientist in the field thus far. His knowledge base was simply phenomenal, he did not just know “the literature”, he knew all literatures. It therefore would not have made sense to compile a special issue about a specific topic. Instead, this issue pays tribute to a very special person. Glyn’s career started with his first publication in 1978, on category priming in the perception of letters and digits (Humphreys, 1978). One of his most recent contributions is in this issue, also on category perception (Panis, Torfs, Gillebert, Wagemans, & Humphreys, this issue). In between these two articles, he published well over 600 scientific works and has been cited more than 20,000 times. The list of seminal contributions to science is endless. In 1987 he published the first known case of integrative agnosia, together with Jane Riddoch (Humphreys & Riddoch, 1987; Riddoch & Humphreys, 1987a). Important work on agnosia followed with the discovery of a nonspatial form of extinction in simultanagnosia (Humphreys, Romani, Olson, Riddoch, & Duncan, 1994). He presented an important theory on object recognition and naming (Humphreys, Riddoch, & Quinlan, 1988), how category-specific deficits in object recognition are to be explained (Humphreys & Forde, 2001), and the influential idea that between-object space is represented fundamentally differently from within-object space (Humphreys, 1998). Furthermore, together with Jane, Glyn has been among the first and strongest advocates of the idea that action and perception strongly interact (Humphreys & Riddoch, 2001; Humphreys et al., 2010; Riddoch & Humphreys, 1987b; Riddoch,