By an ancient and honourable tradition, which began last year when I spared you this exercise, the President gives a Presidential Address only once during his term of office, on retirement. A presidential address in the summer season is a privileged occasion. Coming at the end of an active day, it is not the moment for a massive account of research. Rather it is an occasion when one may indulge with privilege in some directed impressionism, and that is what I (...) propose to do. (shrink)

I examine the kindred phenomena of shadows and night in order to reveal their significance for better understanding our lifeworld and the elemental environment. I first describe how light is primary to ecological perception and how it conditions our conceptions of space, truth, and beauty. Light and darkness are involved in a dialectical relationship rather than conceived as polar opposites. Borne of the interplay of both realms, shadows have been disparaged historically and deserve to be reconsidered for their aesthetic appearance (...) and their relevance to an ecology and anthropology of perception. Night, in turn, is often marked by a negative ontology that points toward the possibility of a kind of elemental a priori, but it is important to characterize darkness in terms of its subtle shades and filtering by way of the creative matrix of the human imagination. Seeing the night in novel and unexpected ways, especially via the insights and descriptions of phenomenologists, poets, and artists, enables us to grasp the depth and atmosphere of the surrounding world and to light up our geographical perspectives, our philosophical visions, and our environmental awareness. (shrink)

PurposeIf an individual has been blind since birth due to a treatable eye condition, ocular treatment is urgent. Even a brief period of visual deprivation can alter the development of the visual system. The goal of our structured scoping review was to understand how we might better support children with delayed access to ocular treatment for blinding conditions.MethodWe searched MEDLINE, Embase and Global Health for peer-reviewed publications that described the impact of early and extended bilateral visual deprivation.ResultsOf 551 reports independently (...) screened by two authors, 42 studies met our inclusion criteria. Synthesizing extracted data revealed several trends. The data suggests persistent deficits in visual acuity, contrast sensitivity, global motion, and visual-motor integration, and suspected concerns for understanding complex objects and faces. There is evidence for resilience in color perception, understanding of simple shapes, discriminating between a face and non-face, and the perception of biological motion. There is currently insufficient data about specific habilitation strategies to update low vision services, but there are several insights to guide future research in this domain.ConclusionThis summary will help guide the research and services provision to help children learn to see after early and extended blindness. (shrink)

Nous avons montré en première partie que la question du corps et de l’esprit posait trois problèmes distincts : le problème de la corrélation (comment expliquer la corrélation du corps et de l’esprit sans renoncer à leur différence de nature ?), le problème du corps propre (notre corps est-il un simple objet pour notre esprit ?), et le problème de la prévention de l’esprit à l’égard des corps (pourquoi considérons-nous plus volontiers que le monde se compose de corps que d’évènements (...) ou de processus ?). Il ne faut donc pas réduire la question du corps et de l’esprit au seul problème de la corrélation. Cela dit, il faut maintenant souligner que le problème de la corrélation est de loin de plus important des trois, qu’il est en substance celui qui, des présocratiques à nos jours, a fait l’objet de l’attention philosophique la plus grande. La deuxième partie de ce cours lui sera donc consacrée. (shrink)

[opening paragraph]: An intriguing element of Paul Cezanne's legacy is that while he aligned his paintings with the classical Renaissance tradition of Western art, his innovative body of work ushered in a decisive break with the standards of that tradition in the twentieth century. The many ways in which Cezanne's representational system deviates from the pluralistic art of the twentieth century suggests that probing his allegiance to classicism offers a unique vantage point for studying visual art, perception, and consciousness. It (...) is for this reason that this paper examines Cezanne's contributions from both the painterly and the cognitive science perspectives, asking what artists in fact contribute to our studies in these areas. [A response to this article from Semir Zeki is published in Trends in Cognitive Science.]. (shrink)

The reports of individuals who have had their vision restored after a long period of blindness suggest that, immediately after regaining their vision, such individuals are not able to recognize shapes by vision alone. It is often assumed that the empirical literature on sight restoration tells us something important about the relationship between visual and tactile representations of shape. However, I maintain that, immediately after having their sight restored, at least some newly sighted individuals undergo visual experiences that instantiate basic (...) shape phenomenology but which do not present (that is, neither represent nor involve acquaintance with) the corresponding shape properties. Consequently, the empirical literature on sight restoration tells us something important about the role that perceptual phenomenology plays in our perceptual awareness of an object’s properties—it tells us that the properties presented by perceptual experiences are not determined by or “built into” perceptual phenomenology. In addition, I maintain that the evidence concerning sight restoration suggests an alternative theory concerning the role that sensory phenomenology plays in our perceptual awareness of an object’s properties. Specifically, it suggests that, while not inherently representational, sensory phenomenal properties can serve as vehicles for the representation of an object’s properties. (shrink)

Neural impulses from the senses to the brain convey information, not sensation. The direct electrical stimulation of the cortex produces sensations. Hence, such sensations are evoked in the brain, and not received from the senses, nor from the outside world through the senses. More specifically, the experience of light is evoked in the brain and not received from the eyes. Consequently, the born blind, too, would experience light in response to electrical brain stimulation. The luminosity of light is not a (...) property of electromagnetic radiation. If the experience of light is private, then so are the visual observations it makes possible. (shrink)

What can a visually impaired student achieve in art education? Can visually impaired students teach sighted students about elements of perception that sighted students would not normally consider? Are the legal moves towards rights to equal access for visually impaired people useful in asserting that visually impaired students can gain as much from gallery exhibits as sighted students can? In this article, these questions are studied in a practice report of a course involving visually impaired and sighted students working in (...) groups, studying in a museum and creating art work at schools for the blind (i.e. schools maintained for visually impaired and blind students). The study found that by arguing that sighted and visually impaired students can learn about each-others’ perceptual similarities and potentials by working together, and that art is a particularly effective medium for developing this understanding. Furthermore, it is observed that the visually impaired students discussed in this article had as much potential to develop art works as their sighted counterparts. (shrink)