Affective consciousness: Core emotional feelings in animals and humans

The position advanced in this paper is that the bedrock of emotional feelings is contained within the evolved emotional action apparatus of mammalian brains. This dual-aspect monism approach to brain-mind functions, which asserts that emotional feelings may reflect the neurodynamics of brain systems that generate instinctual emotional behaviors, saves us from various conceptual conundrums. In coarse form, primary process affective consciousness seems to be fundamentally an unconditional "gift of nature" rather than an acquired skill, even though those systems facilitate skill acquisition via various felt reinforcements. Affective consciousness, being a comparatively intrinsic function of the brain, shared homologously by all mammalian species, should be the easiest variant of consciousness to study in animals. This is not to deny that some secondary processes (e.g., awareness of feelings in the generation of behavioral choices) cannot be evaluated in animals with sufficiently clever behavioral learning procedures, as with place-preference procedures and the analysis of changes in learned behaviors after one has induced re-valuation of incentives. Rather, the claim is that a direct neuroscientific study of primary process emotional/affective states is best achieved through the study of the intrinsic ("instinctual"), albeit experientially refined, emotional action tendencies of other animals. In this view, core emotional feelings may reflect the neurodynamic attractor landscapes of a variety of extended trans-diencephalic, limbic emotional action systems-including SEEKING, FEAR, RAGE, LUST, CARE, PANIC, and PLAY. Through a study of these brain systems, the neural infrastructure of human and animal affective consciousness may be revealed. Emotional feelings are instantiated in large-scale neurodynamics that can be most effectively monitored via the ethological analysis of emotional action tendencies and the accompanying brain neurochemical/electrical changes. The intrinsic coherence of such emotional responses is demonstrated by the fact that they can be provoked by electrical and chemical stimulation of specific brain zones-effects that are affectively laden. For substantive progress in this emerging research arena, animal brain researchers need to discuss affective brain functions more openly. Secondary awareness processes, because of their more conditional, contextually situated nature, are more difficult to understand in any neuroscientific detail. In other words, the information-processing brain functions, critical for cognitive consciousness, are harder to study in other animals than the more homologous emotional/motivational affective state functions of the brain.     

The rights of humans and other animals

Human moral rights place justified limits on what people are free to do to one another. Animals also have moral rights, and arguments to support the use of animals in scientific research based on the benefits allegedly derived from animal model research are thus invalid. Animals do not belong in laboratories because placing them there, in the hope of benefits for others, violates their rights.     

The directionality and functional organization of frontoparietal connectivity during consciousness and anesthesia in humans

Frontoparietal connectivity has been suggested to be important in conscious processing and its interruption is thought to be one mechanism of general anesthesia. Data in animals demonstrate that feedforward processing of information may persist during the anesthetized state, while feedback processing is inhibited. We investigated the directionality and functional organization of frontoparietal connectivity in 10 human subjects anesthetized with propofol on two separate occasions. Multichannel electroencephalography and a computational method of assessing directed functional connectivity were employed. We demonstrate that directed feedback connectivity is diminished with loss of consciousness and returns with responsiveness to verbal command. We also applied the Dendrogram classification method to assess the global organization of directed functional connectivity during consciousness and anesthesia. We demonstrate a state-specific hierarchy and subject-specific subhierarchy in functional organization. These data support the hypothesis that specific states of human consciousness are defined by specific states of frontoparietal connectivity.     

Externally controlled involuntary cognitions and their relations with other representations in consciousness

Percepts and action-related urges often enter consciousness insuppressibly. The Reflexive Imagery Task (RIT) was developed to investigate how high-level cognitions (e.g., subvocalizations), too, can enter consciousness in this manner. Limitations of the paradigm include (a) that no data have confirmed subjects’ introspections about the involuntary subvocalizations, and (b) that, in everyday life, adaptive responses to involuntary cognitions often depend on the nature of the other contents in consciousness. To address a and b, we developed an RIT in which subjects were presented with visual objects and instructed to not think of the object names. If a subvocalization did arise, however, subjects responded motorically only if the subvocalization rhymed with a word held in memory and if there was a visual “go” cue. Subjects successfully (on 0.83 of the trials) emitted this complex, “multi-determined” response, which provides evidence for the occurrence of the involuntary subvocalizations and illuminates the function of consciousness.     

Meaning in the lives of humans and other animals

This paper argues that contemporary philosophical literature on meaning in life has important implications for the debate about our obligations to non-human animals. If animal lives can be meaningful, then practices including factory farming and animal research might be morally worse than ethicists have thought. We argue for two theses about meaning in life: (1) that the best account of meaningful lives must take intentional action to be necessary for meaning—an individual’s life has meaning if and only if the individual acts intentionally in ways that contribute to finally valuable states of affairs; and (2) that this first thesis does not entail that only human lives are meaningful. Because non-human animals can be intentional agents of a certain sort, our account yields the verdict that many animals’ lives can be meaningful. We conclude by considering the moral implications of these theses for common practices involving animals.     

The evolution of personality variation in humans and other animals

A comprehensive evolutionary framework for understanding the maintenance of heritable behavioral variation in humans is yet to be developed. Some evolutionary psychologists have argued that heritable variation will not be found in important, fitness-relevant characteristics because of the winnowing effect of natural selection. This article propounds the opposite view. Heritable variation is ubiquitous in all species, and there are a number of frameworks for understanding its persistence. The author argues that each of the Big Five dimensions of human personality can be seen as the result of a trade-off between different fitness costs and benefits. As there is no unconditionally optimal value of these trade-offs, it is to be expected that genetic diversity will be retained in the population.     

The unfolding argument: Why IIT and other causal structure theories cannot explain consciousness

How can we explain consciousness? This question has become a vibrant topic of neuroscience research in recent decades. A large body of empirical results has been accumulated, and many theories have been proposed. Certain theories suggest that consciousness should be explained in terms of brain functions, such as accessing information in a global workspace, applying higher order to lower order representations, or predictive coding. These functions could be realized by a variety of patterns of brain connectivity. Other theories, such as Information Integration Theory (IIT) and Recurrent Processing Theory (RPT), identify causal structure with consciousness. For example, according to these theories, feedforward systems are never conscious, and feedback systems always are. Here, using theorems from the theory of computation, we show that causal structure theories are either false or outside the realm of science.     

Offering and soliciting collaboration in multi-party disputes among children (and other humans)

Conclusion This paper has aimed to remedy a neglect of multi-party disputes by addressing how those involved in a two-party argument may collaborate with others who are co-present. Collaboration is a complex phenomenon. In the first place, we have seen that disputes, although initially produced by two parties, do not consist simply of two sides. Rather, given one party's displayed position, stance, or claim, another party can produce opposition by simply aligning against that position or by aligning with a counterposition. This means that parties can dispute a particular position for different reasons and by different means. It is therefore possible for several parties to serially oppose another's claim without achieving collaboration. A second complexity, then, is just that collaboration is a negotiated phenomenon. For example, while it is possible for an outside party to produce an uninvited alignment display that is sympathetic to an already-stated position in a two-party dispute, the party whose position it supports can agree or disagree with that display. Thus, outsiders' uninvited alignment displays that occur subsequent to those of the insiders or principals in a two-party dispute must be considered as collaboration offers, which can be accepted or rejected. But that is not the end of it, for an outside party can offer alignments that now align with a principal party's position and then, addressing a different aspect of the principal's talk, align against it. Finally, in addition to being offered, collaboration can also be solicited. A principal in a two-party dispute solicits collaboration by inviting an outsider to display an alignment favorable to inviter's own position or to participate in a joint activity that supports that stance. Such solicits can be accepted, rejected, or, again, handled in such a way as to exhibit neutrality. Argumentative collaboration, in short, is a specific, momentary, and delicate state of affairs that is also an organized, technical achievement.The fact that the subjects for this study were children has become submerged in the formal analysis of alignment structures and collaboration. Thus, following this research, two directions can be pursued. One would be to ask how children's arguments differ from those occurring among adults. A reasoned answer would be that matters of substance or content may distinguish disputes among youthful persons from those occurring among older ones, while the forms of disputing remain relatively invariant (Maynard, 1985a, 1985b). In other words, by studying multi-party disputes among first-grade children, we learn about the structure of collaboration as a generic phenomenon among at least practitioners of standard English no matter what their age. This claim can be sustained in part because the analysis presented here depends upon deriving a priori conventional relations between utterances, rather than statistical relations between variables (Coulter, 1983). We have not examined exogenous influences — which would include the age characteristics of participants — on disputes, but rather the endogenously-produced structure of argumentative discourse. Still, the claim that patterns of collaboration are generic to children and adults can be examined with further research on multi-party disputes among different age groups.Another, more radical, research orientation, would be to consider, in any social arena where the members are identified as children, how it is that such a membership category (Sacks, 1972) is relevant. If that query is made, then research on children's arguments would involve investigating formal practices for exhibiting the accountable category children as much as it would mean describing the ways that disputing is done. Those who have studied children's arguments, in Pollner's (1979) terms, have treated children as a social fact, a thing, rather than as a socially organized meaning, or ing.To attend to the -ing of things involves a radical modification of the attitude of daily life, for it requires attending to the processes of constitution in lieu of the product thus constituted (Pollner, 1979: 253, fn. 11).In short, we have treated arguments as the important event without also seeing how it is that the category children is constituted as a recognizable feature of and within the research setting.I would like to thank Gail Jefferson, whose extraordinary careful and helpful comments on an earlier version are reflected at numerous points in the paper.     

Measuring consciousness in dreams: The lucidity and consciousness in dreams scale

In this article, we present results from an interdisciplinary research project aimed at assessing consciousness in dreams. For this purpose, we compared lucid dreams with normal non-lucid dreams from REM sleep. Both lucid and non-lucid dreams are an important contrast condition for theories of waking consciousness, giving valuable insights into the structure of conscious experience and its neural correlates during sleep. However, the precise differences between lucid and non-lucid dreams remain poorly understood. The construction of the Lucidity and Consciousness in Dreams scale (LuCiD) was based on theoretical considerations and empirical observations. Exploratory factor analysis of the data from the first survey identified eight factors that were validated in a second survey using confirmatory factor analysis: INSIGHT, CONTROL, THOUGHT, REALISM, MEMORY, DISSOCIATION, NEGATIVE EMOTION, and POSITIVE EMOTION. While all factors are involved in dream consciousness, realism and negative emotion do not differentiate between lucid and non-lucid dreams, suggesting that lucid insight is separable from both bizarreness in dreams and a change in the subjectively experienced realism of the dream.     

Expertise acquisition as sustained learning in humans and other animals: commonalities across species

Expertise acquisition may be a universal attribute of animals. In this study data on foraging efficiency, or expertise, was compared for four species: honeybees (Apis mellifera), oystercatchers (Haematopus ostralegus), chimpanzees (Pan troglodytes), and humans (Homo sapiens). Polynomial regression models were constructed to investigate the relationship between age and foraging efficiency. There was a similar expertise–acquisition function between age and foraging efficiency across species, best described by a quadratic equation. The peak of performance was reached, in all cases, before the average age of death but well after reaching physical maturity and the percentage of lifespan devoted to the skill was more than 10% of the species-typical lifespan.     

Time for consciousness: intention and introspection

We assume that we can act—in at least some cases—by consciously intending to do so. Wegner (2002) appeals to empirical research carried out by Libet et al. (1983) to challenge this assumption. I argue that his conclusion presupposes a particular view of conscious intention. But there is an alternative model available, which has been developed by various writers in the phenomenological tradition, and most recently defended by Moran (2001). If we adopt this alternative account of conscious intention, Wegner’s argument no longer goes through, and we can retain the claim that our conscious intentions can give rise to action.     

Emotion and consciousness

Consciousness and emotion feature prominently in our personal lives, yet remain enigmatic. Recent advances prompt further distinctions that should provide more experimental traction: we argue that emotion consists of an emotion state (functional aspects, including emotional response) as well as feelings (the conscious experience of the emotion), and that consciousness consists of level (e.g. coma, vegetative state and wakefulness) and content (what it is we are conscious of). Not only is consciousness important to aspects of emotion but structures that are important for emotion, such as brainstem nuclei and midline cortices, overlap with structures that regulate the level of consciousness. The intersection of consciousness and emotion is ripe for experimental investigation, and we outline possible examples for future studies.