Model Unity and the Unity of Consciousness: Developments in Expected Float Entropy Minimisation

The unity of consciousness, or, more precisely, phenomenal unity, is an important property of consciousness and an important area of research in mathematical consciousness science and the scientific study of consciousness. Due to the numerous aspects and complexity of consciousness, the property tends to engender loose or inadequate characterizations. In this article, we introduce the concept and mathematical formulation of model unity. A system has model unity if a single relational model, stretched across the whole system, is optimal. Alternatively, model unity may only be present for subsystems, although there may still be unity at some higher level. As a development in the theory of expected float entropy minimisation, such relational models provide an interpretation of system states and the theory may help to provide insights into questions such as why experience of the visual field is unified and why different people do not have a unified consciousness, for example. This article constitutes a relatively small initial study of model unity. Four investigations were undertaken and are given as examples. A postulate is also given, distilling the foundations of EFE minimisation into a clear statement allowing others to consider whether or not the postulate identifies a self-evident fundamental property of consciousness.

Composite Subjectivity in Organisms, Organs, and Organizations

This chapter looks at four potential cases of mental combination, to examine what the theory sketched in the previous chapter might say about them. It starts with the “Nation-Brain” thought experiment, originally offered as a reductio ad absurdum of functionalism, where a few billion people agree to collectively simulate a single human mind. It then considers actual human social groups, the ways that they differ from this thought experiment, and the significance of these differences for questions of collective mentality. It next considers the split-brain phenomenon, where patients with a severed corpus callosum seem at times to exhibit two distinct consciousnesses in one head, and then finally comes back to the ordinary human brain, where two cerebral hemispheres, each capable of supporting consciousness without the other, are able to establish richly unified consciousness through their intact corpus callosum.

Diachronically Unified Consciousness in Augustine and Aquinas

Medieval accounts of diachronically unified consciousness have been overlooked by contemporary readers, because medieval thinkers have a unique and unexpected way of setting up the problem. This paper examines the approach to diachronically unified consciousness that is found in Augustine’s and Aquinas’s treatments of memory. For Augustine, although the mind is “distended” by time, it remains resilient, stretching across disparate moments to unify past, present, and future in a single personal present. Despite deceptively different phrasing, Aquinas develops a remarkably similar view when, in order to accommodate Aristotle’s view of memory to Augustine’s, he insists that an implicit self-awareness “time-stamps” all intellectual acts. According to their shared approach, diachronic unified consciousness is the result of the curious way in which the mind is both drawn into and transcends the temporal succession of its own acts.