Jeffrey Yoshimi

We describe a form of structuralism that focuses on the mereological parts of conscious states, drawing on the metaphor of a symphony where the removal or alteration of any contributor affects the whole in a holistic but determinate way. This variational method is applied to what we call the "minimal experience of self", a composite encompassing (1) a feeling of agency, (2) a feeling of privacy, and (3) a feeling of “me-ness”, each of which partially fuses with our internal thoughts and our bodily sense. We support this view by showing how (1)-(3) can be dissociated in all possible combinations, supporting our analysis with empirical and clinical cases.

Although debate is a richly structured and prevalent form of discourse, it has received little scholarly attention. Logicians have focused on the structure of individual arguments-how they divide into premises and conclusions, which in turn divide into various constituents. In contrast, I focus on the structure of sets of arguments, showing how arguments are themselves constituents in high-level dialectical structures. I represent debates and positions by graphs whose vertices correspond to arguments and whose edges correspond to two inter-argument relations: "dispute" and "support," respectively. On this basis I develop a theory of the structure of debate.

Lopes (2021) has argued against my use of neural networks and dynamical systems theory in neurophenomenology. Responding to his argument provides an opportunity to articulate a pluralist approach to neurophenomenology, according to which multiple theoretical frameworks—symbolic, dynamical systems, connectionist, etc.—can be used to study consciousness and its relationship to neural activity. Each type of analysis is best suited to specific phenomena, but they are mutually compatible and can inform and constrain one another in non-trivial ways. I use historical and conceptual arguments to elaborate on this type of pluralism as it applies to cognitive science, phenomenology, and neurophenomenology.

Aron Gurwitsch’s theory of the structure and dynamics of consciousness has much to offer contemporary theorizing about consciousness and its basis in the embodied brain. On Gurwitsch’s account, as we develop it, the field of consciousness has a variable sized focus or "theme" of attention surrounded by a structured periphery of inattentional contents. As the field evolves, its contents change their status, sometimes smoothly, sometimes abruptly. Inner thoughts, a sense of one’s body, and the physical environment are dominant field contents. These ideas can be linked with (and help unify) contemporary theories about the neural correlates of consciousness, inattention, the small world structure of the brain, meta-stable dynamics, embodied cognition, and predictive coding in the brain.

I argue that Husserlian phenomenology is metaphysically neutral, in the sense of being compatible with multiple metaphysical frameworks. For example, though Husserl dismisses the concept of an unknowable thing in itself as “material nonsense”, I argue that the concept is coherent and that the existence of such things is compatible with Husserl’s phenomenology. I defend this metaphysical neutrality approach against a number of objections and consider some of its implications for Husserl interpretation

The question whether cognition is subserved by internal processes in the brain (internalism) or extends in to the world (active externalism) has been vigorously debated in recent years. I show how internalist and externalist ideas can be pursued in a common framework, using (1) open dynamical systems, which allow for separate analysis of an agent's intrinsic and embodied dynamics, and (2) supervenience functions, which can be used to study how low-level dynamical systems give rise to higher-level dynamical structures

I describe and partially formalize two aspects of Edmund Husserl’s phenomenological philosophy, in a way that highlights their relevance to cognitive science. First, I describe “constitutive phenomenology”, the study of structures (what I call phenomenological “models”) that constitute a person’s sense of reality. These structures develop incrementally over the course of a person’s life, and serve a variety of functions, e.g. generating expectations relative to actions, and determining the contents of context awareness. Second, I describe “transcendental-eidetic phenomenology”, which posits a hierarchy of laws, each governing the way consciousness must be organized in order for a particular type of thing (a physical thing, a person, a social institution, etc.) to appear.

Aron Gurwitsch’s Gestalt-inspired “field theory of consciousness” was introduced in the same period as Wolfgang Köhler’s theory of “electrical brain fields.” I consider parallels between these theories, drawing on results that have emerged in the last five years. First, I consider the claim that fields of consciousness supervene on electromagnetic fields in the brain, then I outline Gurwitsch’s field theory of consciousness, and finally I consider how the structures described by Gurwitsch might relate to structures in the brain’s electro-magnetic field. Along the way, I expose a dogma (that qualia are paradigmatic conscious states) and develop an interpretation of Gurwitsch’s field theory.

We define a mathematical formalism based on the concept of an ‘‘open dynamical system” and show how it can be used to model embodied cognition. This formalism extends classical dynamical systems theory by distinguishing a ‘‘total system’’ (which models an agent in an environment) and an ‘‘agent system’’ (which models an agent by itself), and it includes tools for analyzing the collections of overlapping paths that occur in an embedded agent's state space. To illustrate the way this formalism can be applied, several neural network models are embedded in a simple model environment. Such phenomena as masking, perceptual ambiguity, and priming are then observed. We also use this formalism to reinterpret examples from the embodiment literature, arguing that it provides for a more thorough analysis of the relevant phenomena

More has been written about phenomenology than could possibly be read in a single person’s lifetime, or even in several lifetimes. Despite its unwieldy size, this vast “horizon” of literary output has a tractable structure. We leverage the tools of bibliometrics to study the structure of the phenomenology literature, and test several hypotheses about it. We create an author-wise co-citation network, a graph of nodes and connections, where each node corresponds to an author who has written a document with the word “Phenomenology” in it, and where two nodes are connected if the corresponding authors have cited each other. By applying clustering algorithms and other techniques to this network, certain structural features of the field emerge. The main areas of research since 1970 conform fairly well to an intuitive understanding of the literature, though there are some surprises.

Embodied approaches to cognition see abstract thought and language as grounded in interactions between mind, body, and world. A particularly important challenge for embodied approaches to cognition is mathematics, perhaps the most abstract domain of human knowledge. Conceptual metaphor theory, a branch of cognitive linguistics, describes how abstract mathematical concepts are grounded in concrete physical representations. In this paper, we consider the implications of this research for the metaphysics and epistemology of mathematics. In the case of metaphysics, we argue that embodied mathematics is neutral in the sense of being compatible with all existing accounts of what mathematical entities really are. However, embodied mathematics may be able to revive an older position known as psychologism and overcome the difficulties it faces. In the case of epistemology, we argue that the evidence collected in the embodied mathematics literature is inconclusive: It does not show that abstract mathematical thinking is constituted by metaphor; it may simply show that abstract thinking is facilitated by metaphor. Our arguments suggest that closer interaction between the philosophy and cognitive science of mathematics could yield a more precise, empirically informed account of what mathematics is and how we come to have knowledge of it.

Progress in psychology and the cognitive sciences is often taken to vindicate physicalism and cast doubt on such extravagant metaphysical theses as dualism and idealism. The goal of this paper is to argue that cognitive science has no such implications—rather, evidence from cognitive science is largely (but not wholly) irrelevant to the mind-body problem. Our argument begins with the observation that data from cognitive science can be modeled by supervenience relations. We then show that supervenience relations are neutral, by showing how they can be coherently interpreted in physicalist, idealist, and dualist terms. We distinguish several types of supervenience relation, and show that each coheres better with some positions on the mind-body problem than the other. Since these variants of supervenience are not empirically equivalent, there is a possibility that data from cognitive science will end up supporting some positions on the mind-body problem more than others. It is in this sense that cognitive science is mostly, but not wholly, neutral.

This book explores phenomenology as a diverse movement in philosophy and as an active research method that crosses disciplinary boundaries. Bringing together overviews of major areas and schools of phenomenology, as well as the most recent applications of phenomenology across a range of fields, this volume offers a concise introduction to phenomenological research. The first part reviews the state of the art in various areas of contemporary phenomenology, including several distinct schools of Husserl and Heidegger scholarship, as well as approaches derived from Merleau-Ponty, Beauvoir, Fanon, and others. A quantitative analysis of citation networks provides visualizations of the field as a whole. The second part showcases phenomenology as a living discipline that is advancing research into questions of embodiment and identity, the arts, and archaeology and anthropology.

This chapter (1) provides an overview of the unifying interpretation of Husserl, summarizing the various concepts that have been formalized in a common framework and giving readings of several long passages that illustrate this unification; (2) considers how the formalism could be extended to other domains of “constitutive phenomenology”; (3) applies the formalism to additional concepts in Husserlian phenomenology (e.g. the distinction between perfect and imperfect evidence); (4) describes the relevance of this framework to efforts to naturalize phenomenology, and in particular to dynamical systems and Bayesian approaches to cognitive science; and (5) considers further ways this interpretation could be applied, e.g. to literature and anthropology.

I review the historical relationship between phenomenology and the natural sciences, survey the contemporary literature on naturalized phenomenology, and defend a position whereby phenomenology is an ‘equal partner’ in the pluralist enterprise of consciousness studies. On this view, phenomenology does not have the kind of methodological priority Husserl and his early followers attributed to it. Nor, I argue, does it have any insights or methods to offer that are not available, at least in principle, from other sources. On the other hand, phenomenology does have a great deal to offer de facto to the naturalization project—namely, a set of detailed accounts of experience in particular domains. I conclude by describing an approach to naturalized phenomenology that emphasizes visualization of neuro-phenomenological processes.

We survey the development of “California Phenomenology”, both as a philosophical movement originating with Dagfinn Føllesdal’s formulation of a Fregean, analytic reading of Husserl in the late 1950s and 1960s, and as an evolving network of philosophers working throughout California, who have met under the auspices of several groups in a more or less continuous way since that time. We trace the history of these groups in detail, provide an overview of debates that occurred between “West Coast” approaches to Husserlian phenomenology and other approaches, and survey the broad panorama of more recent work.

This chapter presents the main formalism of the book, which is used in subsequent chapters to describe a variety of concepts in Husserlian phenomenology, and thereby unify them. A dynamical systems approach to Husserl is introduced, and several dynamical laws of Husserlian phenomenology are described. The first is an expectation rule according to which expectations are determined by what a person knows, sees, and does. The second is a learning rule according to which background knowledge is updated in a specific way when experiences fulfill or frustrate prior expectations. In addition to these rules, a “supervenience function” is described, which associates how a thing is seen with a “trail set,” the set ways that thing is expected to look, relative to all possible ways of moving around it. This function further illustrates the explanatory dimension of phenomenology described in Chap. 2, whereby how we immanently experience things is determined by how we expect them to look relative to counterfactual movement patterns.

This is an open access book which explores phenomenology as both an exceptionally diverse movement in philosophy as well as an active research method that crosses disciplinary boundaries. The volume brings together lively overviews of major areas and schools of phenomenology, as well as the most recent applications across a range of fields. The first part reviews the state-of-the-art in various areas of contemporary phenomenology, including several distinct schools of Husserl and Heidegger scholarship, as well as approaches derived from Merleau-Ponty, de Beauvoir, Fanon, and others. An innovative quantitative analysis of citation networks provides rich visualizations of the field as a whole. The second part showcases phenomenology as a living discipline that can advance research in other areas. While some areas of interaction between phenomenology and other disciplines are by now well established (e.g. cognitive science), this volume sheds light on newer areas of application. The goal is to move beyond discussions of philosophical method and highlight scholars who are actually doing phenomenology in a variety of areas, including: Embodiment and questions of gender, race, and identity, The arts (visual art, literature, architecture), and Archaeology and anthropology. This volume offers a concise introduction to cutting edge phenomenological research and is suitable for both students and specialists.

Representational and embodied approaches to cognitive science are often presented in opposition to one another, with Merleau-Ponty serving as a historical precursor to embodied approaches. We argue that the two approaches are compatible and complementary, and that both can be used to interpret Merleau-Ponty's (and Husserl's) work. To support our arguments, we describe two forms of representation associated with two distinct processes. Motor intentionality is a process of direct embodied interaction (reflexes, habits, skilled behaviors) which use mediating representations to bind sensory information together and guide behavior. These internal states reliably indicate specific stimuli (even if just during a transient episode), are associated with a determinate phenomenal character (a “typical physiognomy”), and correspond to what Husserl describes as passive synthesis. Higher-level processes like reasoning make use of more explicit representations (what Husserl calls active processes), which are associated with focused attention and “explicated” propositional contents. The two kinds of process can occur independently, but are often fully woven together, as for example when a friend makes explicit suggestions while the two of you cook. We also discuss Merleau-Ponty’s famous Schneider case, which makes vivid what happens when both types of processes (motor intentionality and high-level reasoning; passive and active synthesis) are intact, but when some explicit representations are damaged. A certain stratum of virtual or projected space is lost, and so a certain kind of abstractly guided behavior is unavailable to him.

In this chapter constitution and constitutive phenomenology are interpreted using the unifying formalism. Constitution is treated as a relationship between immanent experiences of objects and the counter-factual trail sets that determine them. Constitution as a developmental, “constructive” process (which relies on the learning rule) is described, as is the notion that constitutive phenomenology is a research program, which extends beyond the case of visually perceived physical things to encompass all categories of given object.