Online research in philosophy

A focus on the relation between sensation and the perceptual object in the philosophies of G H Mead and Maurice Merleau-Ponty points toward their shared views of perception as non-reductionistic and holistic, as inextricably tied to the active role of the sensible body, and as involving a new understanding of the nature of immediacy within experience. This essay explores these shared views.

The sensation-perception distinction did not appear before the seventeenth century, but since then various formulations of it have gained wide acceptance. This is not an historical accident and the article suggests an explanation for its appearance. Section 1 describes a basic assumption underlying the sensation-perception distinction, to wit, the postulation of a pure sensory stage--viz. sensation--devoid of active influence of the agent's cognitive, emotional, and evaluative frameworks. These frameworks are passive in that stage. I call this postulation the passivity assumption. Section 2 suggests three major reasons for the emergence of this assumption in the seventeenth century: the mental-physical gap, the causal theory of perception, and epistemological considerations regarding the status of the sensory given. In the last section a critical discussion is presented. The passivity assumption is found to have serious empirical and theoretical flaws.

Prologue : narratocracy and the contours of political life -- From nomos to nomad : Kant, Deleuze, and Rancière on sensation -- The piazza, the edicola, and the noise of the utterance -- Machiavelli's theory of sensation and Florence's vita festiva -- The viewing subject : Caravaggio, Bacon, and the ring -- "You're eating too fast!" slow food's ethos of convivium -- Epilogue : "the photographs tell it all" : on an ethics of appearance.

Often, sensory input underdetermines perception. One such example is the perception of illusory contours. In illusory contour perception, the content of the percept includes the presence of a contour that is absent from the informational content of the sensation. (By “sensation” I mean merely information-bearing events at the transducer level. I intend no further commitment such as the identification of sensations with qualia.) I call instances of perception underdetermined by sensation “underdetermined perception.” The perception of illusory contours is just one kind of underdetermined perception. The focus of this chapter is another kind of underdetermined perception: what I shall call "active perception". Active perception occurs in cases in which the percept, while underdetermined by sensation, is determined by a combination of sensation and action. The phenomenon of active perception has been used by several to argue against the positing of representations in explanations of sensory experience, either by arguing that no representations need be posited or that far fewer than previously thought need be posited. Such views include, but are not limited to those of Gibson (1966, 1986), Churchland.