The essays in this volume explore the intricacies and varieties of the conceptual relationships among intentionality, cognition, and mental representation as conceived by some of the greatest mediaeval philosophers, including Aquinas, Scotus, Ockham, and Buridan, as well as some of their lesser-known but still influential contemporaries. The clarification of these conceptual connections sheds new light not only on the intriguing historical relationships between mediaeval and modern thought on these issues, but also on some fundamental questions in the philosophy of mind as it is conceived today.

It is commonly supposed that certain elements of medieval philosophy are uncharacteristically preserved in modern philosophical thought through the idea that mental phenomena are distinguished from physical phenomena by their intentionality, their intrinsic directedness toward some object. The many exceptions to this presumption, however, threaten its viability. This volume explores the intricacies and varieties of the conceptual relationships medieval thinkers developed among intentionality, cognition, and mental representation. Ranging from Aquinas, Scotus, Ockham, and Buridan through less-familiar writers, the collection sheds new light on the various strands that run between medieval and modern thought and bring us to a number of fundamental questions in the philosophy of mind as it is conceived today.

A major contribution to the history of philosophy in the later medieval period (1250-1350).

Richard Cross provides the first complete and detailed account of Duns Scotus's theory of cognition, tracing the processes involved in cognition from sensation, through intuition and abstraction, to conceptual thought. He provides an analysis of the ontological status of the various mental items (acts and dispositions) involved in cognition, and a new account of Scotus on nature of conceptual content. Cross goes on to offer a novel, reductionist, interpretation of Scotus's view of the ontological status of representational content, as well as new accounts of Scotus's opinions on intuitive cognition, intelligible species, and the varieties of consciousness. Scotus was a perceptive but highly critical reader of his intellectual forebears, and this volume places his thought clearly within the context of thirteenth-century reflections on cognitive psychology, influenced as they were by Aristotle, Augustine, and Avicenna. As far as possible, Duns Scotus's Theory of Cognition traces developments in Scotus's thought during the ten or so highly productive years that formed the bulk of his intellectual life.

It is supposed to be common knowledge in the history of ideas that one of the few medieval philosophical contributions preserved in modern philosophical thought is the idea that mental phenomena are distinguished from physical phenomena by their intentionality, their directedness toward some object. As is usually the case with such commonplaces about the history of ideas, especially those concerning medieval ideas, this claim is not quite true. Medieval philosophers routinely described ordinary physical phenomena, such as reflections in mirrors or sounds in the air, as exhibiting intentionality, while they described what modern philosophers would take to be typically mental phenomena, such as sensation and imagination, as ordinary physical processes. Still, it is true that medieval philosophers would regard all acts of cognition as characterized by intentionality, on account of which all these acts are some sort of representations of their intended objects. Mental Representation explores the intricacies and varieties of the conceptual relationships between intentionality, cognition and mental representation as conceived by some of the greatest medieval philosophers. The clarification of these conceptual connections sheds new light not only on the intriguing historical relationships between medieval and modern thought on these issues, but also on some fundamental questions in the philosophy of mind as it is conceived today.

The notion that human thought is structured like a language, with a precise syntax and semantics, has been pivotal in recent philosophy of mind. Yet it is not a new idea: it was systematically explored in the fourteenth century by William of Ockham and became central in late medieval philosophy. Mental Language examines the background of Ockham's innovation by tracing the history of the mental language theme in ancient and medieval thought. Panaccio identifies two important traditions: one philosophical, stemming from Plato and Aristotle, and the other theological, rooted in the Fathers of the Christian Church. The study then focuses on the merging of the two traditions in the Middle Ages, as they gave rise to detailed discussions over the structure of human thought and its relations with signs and language. Ultimately, Panaccio stresses the originality and significance of Ockham's doctrine of the oratio mentalis (mental discourse) and the strong impression it made upon his immediate successors.

The topic of this book is mental representation, a theoretical concept that lies at the core of cognitive science. Together with the idea that thinking is analogous to computational processing, this concept is responsible for the "cognitive turn" in the sciences of the mind and brain since the 1950s. Conceiving of cognitive processes (such as perception, reasoning, and motor control) as consisting of the manipulation of contentful vehicles that represent the world has led to tremendous empirical advancements in our explanations of behaviour. Perhaps the most famous discovery that explains behavior by appealing to the notion of mental representations was the discovery of 'place' cells that underlie spatial navigation and positioning, which earned researchers John O'Keefe, May-Britt Moser, and Edvard I. Moser a joint Nobel Prize in 2014. And yet, despite the empirical importance of the concept, there is no agreed definition or theoretical understanding of mental representation. This book constitutes a state-of-the-art overview on the topic of mental representation, assembling some of the leading experts in the field and allowing them to engage in meaningful exchanges over some of the most contentious questions. The collection gathers both proponents and critics of the notion, making room for debates dealing with the theoretical and ontological status of representations, the possibility of formulating a general account of mental representation which would fit our best explanatory practices, and the possibility of delivering such an account in fully naturalistic terms. Some contributors explore the relation between mutually incompatible notions of mental representation, stemming from the different disciplines composing the cognitive sciences (such as neuroscience, psychology, and computer science). Others question the ontological status and explanatory usefulness of the notion. And finally, some try to sketch a general theory of mental representations that could face the challenges outlined in the more critical chapters of the volume.