This paper investigates the idea that perception can be, at once, a mode of direct awareness of the world and an encounter, in the first instance, with mere appearances. In developing this point, I introduce a sensorimotor account of perception according to which the senses are ways of exploring the environment mediated by different patterns of sensorimotor contingency (i.e. by the distinctive ways in which what the perceiver does affects how things appear).

Examines the theses that the postulation of mental processing is unnecessary to account for our perceptual relationship with the world, see turvey etal. for a criticque.

This is a charming and engaging book that combines careful attention to the phenomenology of experience with an appreciation of the psychology and neuroscience of perception. In some of its aimsfor example, to show problems with a rigid version of a view of visual perception as an inverse optics process of constructing a static 3-D representation from static 2-D information on the retina--it succeeds admirably. As No points out, vision is a process that depends on interactions between the perceiver and (...) the environment and involves contributions from sensory systems other than the eye. He is at pains to note that vision is not passive. His analogy with touch is to the point: touch involves skillful probing and movement, and so does vision, although less obviously and in my view less centrally so. This much is certainly widely accepted among vision scientistsalthough mainstream vision scientists (represented, for example, by Stephen Palmers excellent textbook²) view these points as best seen within a version of the inverse optics view that takes inputs as non-static and as including motor instructions (for example, involving eye movements and head movements).³ The kind of point that No raises is viewed as important at the margins, but as not disturbing the main lines of the picture of vision that descendswith many changesfrom the pioneering work of David Marr in the 1980s (and before him, from Helmholtz). But No shows little interest in mainstream vision science, focusing on non-mainstream ideas in the science of perception, specifically ideas from the anti-representational psychologist J.J. Gibson, and also drawing on Wittgenstein and the phenomenology tradition. There is a sense throughout the book of revolution, of upsetting the applecart. This is a review from the point of view of the applecart. (shrink)

The passage above comes from the opening pages of Merleau-Ponty’s essay on Edmund Husserl. It proposes a risky interpretive principle. The main feature of this principle is that the seminal aspects of a thinker’s work are so close to him that he is incapable of articulating them himself. Nevertheless, these aspects pervade the work, give it its style, its sense and its direction, and therefore belong to it essentially. As Martin Heidegger writes, in a passage quoted by Merleau-Ponty: " The (...) greater the work of a thinker – which in no way coincides with the breadth and number of writings – the richer is what is un-thought in this work, which means, that which emerges in and through this work as having not yet been thought. 2 " The goal of Merleau-Ponty’s essay, he says, is “to evoke this un-thought-of element in Husserl’s thought”. 3. (shrink)

Some cognitive states — e.g. states of thinking, calculating, navigating — may be partially external because, at least sometimes, these states depend on the use of symbols and artifacts that are outside the body. Maps, signs, writing implements may sometimes be as inextricably bound up with the workings of cognition as neural structures or internally realized symbols (if there are any). According to what Clark and Chalmers [1998] call active externalism, the environment can drive and so partially constitute cognitive processes. (...) Where does the mind stop and the rest of the world begin? If active externalism is right, then the boundary cannot be drawn at the skull. The mind reaches – or at least can reach --- beyond the limits of the body out into the world. (shrink)