A theory of the structure and cognitive function of the human imagination that attempts to do justice to traditional intuitions about its psychological centrality is developed, largely through a detailed critique of the theory propounded by Colin McGinn. Like McGinn, I eschew the highly deflationary views of imagination, common amongst analytical philosophers, that treat it either as a conceptually incoherent notion, or as psychologically trivial. However, McGinn fails to develop his alternative account satisfactorily because (following Reid, Wittgenstein and Sartre) he (...) draws an excessively sharp, qualitative distinction between imagination and perception, and because of his flawed, empirically ungrounded conception of hallucination. His arguments in defense of these views are rebutted in detail, and the traditional, passive, Cartesian view of visual perception, upon which several of them implicitly rely, is criticized in the light of findings from recent cognitive science and neuroscience. It is also argued that the apparent intuitiveness of the passive view of visual perception is a result of mere historical contingency. An understanding of perception (informed by modern visual science) as an inherently active process enables us to unify our accounts of perception, mental imagery, dreaming, hallucination, creativity, and other aspects of imagination within a single coherent theoretical framework. (shrink)

I do not think that the world or the sciences would ever have suggested to me any philosophical problems. What has suggested philosophical problems to me is things which other philosophers have said about the world or the sciences. (G.E. Moore, 1942, p. 14).

Mental imagery (varieties of which are sometimes colloquially refered to as “visualizing,” “seeing in the mind's eye,” “hearing in the head,” “imagining the feel of,” etc.) is quasi-perceptual experience; it resembles perceptual experience, but occurs in the absence of the appropriate external stimuli. It is also generally understood to bear intentionality (i.e., mental images are always images of something or other), and thereby to function as a form of mental representation. Traditionally, visual mental imagery, the most discussed variety, was thought (...) to be caused by the presence of picturelike representations (mental images) in the mind, soul, or brain, but this is no longer universally accepted. (shrink)

This volume focuses on Berkeley's doctrine of signs. The 'doctrine of signs' refers to the use that Berkeley makes of a phenomenon that is central to a great deal of everyday discourse: one whereby certain perceivable entities are made to stand in for (as 'signs' of) something else. Things signified might be other perceivable entities or they might also be unperceivable notions - such as the meanings of words. From his earliest published work, A New Theory of Vision in 1710, (...) to those works written towards the end of life, including Alciphron in 1732, Berkeley is at pains to emphasise the crucial role that sign-usage, particularly (but not only) in language, plays in human life. Berkeley also connects sign-usage to our (human) relationship with God: an issue that was right of the heart of his philosophical project. The contributions in this volume explore the myriad ways that Berkeley built on such insights to better understand a range of philosophical issues - issues of epistemology, language, perception, mental representation, mathematics, science, and theology. The aim of this volume is to establish that the doctrine of signs can be seen as one of the unifying themes of Berkeley's philosophy. What's more, this theme is one which spans his whole philosophical corpus; not just his best-known works like the Principles and the Three Dialogues, but also his works on science, mathematics, and theology. (shrink)

Perception plays a central and wide‐ranging role in the philosophy of Margaret Cavendish. In this paper, I argue that Cavendish holds a naïve realist theory of perception. The case draws on what Cavendish has to say about perceptual presentation, the role of sympathy in experience, the natures of hallucination and of illusion, and the individuation of kinds. While Cavendish takes perception to have representational content, I explain how this is consistent with naïve realism. In closing, I address challenges to the (...) interpretation, one of which turns on whether Cavendish allows for action at a distance. I argue that she does. (shrink)

Aphantasia, i.e., the inability to voluntarily form visual mental images, affects approximately 2 to 5 percent of the population and plays an important role in a more general debate revolving around the role of imagery for our cognition. This thesis investigates aphantasia by means of an interdisciplinary approach, combining insights from contemporary neuroscientific research with historical philosophical arguments, with a specific focus on the later philosophy of Ludwig Wittgenstein. A new theoretical concept, meta-imagination, is developed and it is argued that (...) the concept can explain why aphantasics perform successfully on a wide range of visual imagery tasks, thus providing important implications for the more general debate about the connection between imagery and cognition. (shrink)

Robert Cummins [(1996) Representations, targets and attitudes, Cambridge, MA: Bradford/MIT, p. 1] has characterized the vexed problem of mental representation as "the topic in the philosophy of mind for some time now." This remark is something of an understatement. The same topic was central to the famous controversy between Nicolas Malebranche and Antoine Arnauld in the 17th century and remained central to the entire philosophical tradition of "ideas" in the writings of Locke, Berkeley, Hume, Reid and Kant. However, the scholarly, (...) exegetical literature has almost no overlap with that of contemporary cognitive science. I show that the recurrence of certain deep perplexities about the mind is a systematic and pervasive pattern arising not only throughout history, but also in a number of independent domains today such as debates over visual imagery, symbolic systems and others. Such historical and contemporary convergences suggest that the fundamental issues cannot arise essentially from the theoretical guise they take in any particular case. (shrink)

Malebranche argues that ideas are representative beings existing in God. He defends this thesis by an inference to the best explanation of human perception. It is well known that Malebranche’s theory of vision in God was forcefully rejected by philosophers such as Arnauld, Locke, and Berkeley. However, the notion that ideas exist in God was not the only controversial aspect of Malebranche’s approach. Another controversy centered around Malebranche’s view that ideas are to be understood as posits in an explanatory theory. (...) Opponents of this approach, including Arnauld and Locke, held that our talk about ideas was not explanatory but instead merely descriptive: we use the word ‘idea’ to describe phenomena that we observe by reflecting on our own minds. This controversy has not received much attention from scholars, but in the present paper I will show that it was an explicit and important subject of concern for Malebranche, Arnauld, Locke, and Berkeley and that attention to this controversy can illuminate several aspects of these philosophers’ work. (shrink)

The primary aim of this paper is to provide a new account of Descartes’s positive philosophical view on sensory perception, and to do so in a way that will establish a hitherto unnoticed continuity between his thought and that of his scholastic Aristotelian predecessors on the topic of sensory perception. I will argue that the basic framework of the scholastic Aristotelian view on sensory perception (as traditionally understood) is operative within Descartes's own view, and then reveal some insights on the (...) issue of whether Descartes was a representationalist about sensory perception by critically examining one kind of representationalist reading of Descartes under the lens of my account. I will conclude by examining the implications that my view has for the proposed distinction between Descartes and the scholastics based on attributing representationalism to the former and direct-realism to the latter. (shrink)

In this paper I defend the view that Berkeley endorses a spirit-idea dualism, and I explain what this dualism amounts to. Central to the discussion is Berkeley's claim that spirits and ideas are "entirely distinct." Taken as a Cartesian real distinction, the "entirely distinct" claim seems to be at odds with Berkeley's view that spirits are substances that support ideas by perceiving them. This has led commentators to deflate Berkeley's notion of "entire distinction" by reading it as analogous to the (...) categorical distinction between substance and accident. I argue that rather than taking Berkeley's notion of "entire distinction" in either of these ways, it ought to be understood as insisting upon a radical dissimilitude between spirits and ideas. This dissimilitude requires that ideas cannot be viewed as analogous to modes or accidents which inhere in a substance. Moreover, spirits and ideas cannot be understood in terms of a single, gradated scale of reality. Instead, for Berkeley spirits and ideas occupy two entirely different scales of reality and consequently the very term 'thing' applies to them in different senses. In this way, Berkeley endorses a severe dualism that occurs at the highest level of his ontology. En este trabajo defiendo que Berkeley sostiene un dualismo espíritu-idea y explico qué significa tal dualismo. Es central en la discusión la afirmación de Berkeley que los espíritus y las ideas son "totalmente distintos". Considerada como una distinción real cartesiana, la tesis "totalmente distintos" parece estar en tensión con la concepción de Berkeley de que los espíritus son sustancias que "support ideas by perceiving them". Esto ha llevado a los comentadores a disminuir la noción de Berkeley de "distinción total" leyéndola como un análogo a la distinción categorial entre sustancia y accidente. Yo argumento que en lugar de considerar a la noción de Berkeley de "distinción total"en alguno de esos modos, debe ser comprendida como insistiendo en una radical diferencia entre espíritus e ideas. Esta diferencia requiere que las ideas no se vean como análogas a modos o accidentes de la sustancia. Además espíritus e ideas no pueden ser entendidos en términos de una única escala graduada de realidad. En cambio para Berkeley espíritus e ideas ocupan dos escalas totalmente distintas de realidad y en consecuencia, el término mismo "cosa" se aplica en sentidos distintos. De este modo, Berkeley sostiene un dualismo severo que acaece al más alto nivel de su ontología. (shrink)