What kinds of mental states can be based on epistemic reasons? The standard answer is only beliefs. I argue that perceptual states can also be based on reasons, as the result of crossmodal interactions. A perceptual state from one modality can provide a reason on which an experience in another modality is based. My argument identifies key markers of the basing relation and locates them in the crossmodal Marimba Illusion (Schutz & Kubovy 2009). The subject’s auditory experience of musical tone (...) duration is based on the reason provided by her visual representation of the length of the musician’s gesture and other stored perceptual principles. (shrink)

This study seeks to explicate the philosophical foundations and theoretical outlines of grey systems theory by focusing on human perception, cognition, and understanding processes and by considering their functions in the process of producing knowledge. Primarily, the study investigates the processes of perception, cognition, and understanding, as well as their dynamicity. Then, it is explained how knowledge is produced through the interpretation/understanding of information and data and through the dynamicity governing this process. The findings reveal that human perception, cognition, and (...) understanding perpetually remain grey and imperfect, while lost sensatory data mark the very first aspect of greyness in such human capabilities. Furthermore, any piece of data, as a discrete and single entity, represents a determinate fact, symbol or signal from the world, while any set of data, no matter how large, remains incomplete and imperfect, and human beings always interpret inadequate sets of data in the world. Therefore, information and knowledge always remain grey and uncertain because they deeply rely on subjective understandings/interpretations and work with imperfect inputs and sets of data. The impact of knowledge on action and interaction and their effects on the world are some factors adding to the dynamicity of the world. Constant change in world data, outdated knowledge, defects in datasets, and human biases in understanding all confirm the infinitely grey nature of human knowledge of the world. (shrink)

Philosophical accounts of visual perception have long had to contend with questions of perceptual relativity: visual phenomenology seems to be influenced by factors independent of the objective properties of the external objects we perceive. More recently, a host of such examples has emerged from psychological studies on visual attention. In two prominent accounts of the consequences of this research, Block argues that these effects occur without changes in the way one visually represents the world to be. If true, this would (...) undermine representationalist accounts of the phenomenology of perception, which share a commitment to the claim that phenomenal character supervenes on representational content. Block’s thesis is based on experiments involving non-selective attention, and he draws the metaphysical conclusion that the resources representationalists need to distinguish veridical from illusory perception are nonexistent. The empirical evidence he considers is highly compelling, as is the ‘landscape’ model of attention that appears to underwrite it. However, in discussing these issues, Block also considers a representative example of selective attention, wherein he concedes a point that provides grounds for a plausible representationalist response. I assemble and assess this response, revealing the contradiction at the heart of Block’s thesis, and conclude, that the representationalist should remain unmoved. (shrink)

Perceptual Confidence is the thesis that perceptual experiences can be probabilistic. This thesis has been defended and criticised based on a variety of phenomenological, epistemological, and explanatory arguments. One gap in these arguments is that they neglect the question of whether perceptual experiences satisfy the formal conditions that define the notion of probability to which Perceptual Confidence is committed. Here, we focus on this underexplored question and argue that perceptual experiences do not satisfy such conditions. But if they do not, (...) then ascriptions of perceptual confidence are undefined; and so, Perceptual Confidence cannot be true. (shrink)

Clarke and Beck assume that approximate number system representations should be assigned referents from our scientific ontology. However, many representations, both in perception and cognition, do not straightforwardly refer to such entities. If we reject Clarke and Beck's assumption, many possible contents for ANS representations besides number are compatible with the evidence Clarke and Beck cite.