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Full-Text Articles in Neuroscience and Neurobiology

Communicating Canine And Human Emotions, Juliane Bräuer, Karine Silva, Stefan R. Schweinberger Jan 2017

Communicating Canine And Human Emotions, Juliane Bräuer, Karine Silva, Stefan R. Schweinberger

Animal Sentience

Kujala (2017) reviews a topic of major relevance for the understanding of the special dog-human relationship: canine emotions (as seen through human social cognition). This commentary draws attention to the communication of emotions within such a particular social context. It highlights challenges that need to be tackled to further advance research on emotional communication, and it calls for new avenues of research. Efforts to disentangle emotional processes from cognitive functioning might be necessary to better comprehend how they contribute, alone and/or in combination, to the communication of emotions. Also, new research methods need to be developed to account for the …


Inferring Emotion Without Language: Comparing Canines And Prelinguistic Infants, Stefanie Hoehl Jan 2017

Inferring Emotion Without Language: Comparing Canines And Prelinguistic Infants, Stefanie Hoehl

Animal Sentience

Research on canine emotions has to deal with challenges quite similar to psychological research on social and emotional development in human infants. In both cases, verbal reports are unattainable, and behavioral and physiological methods have to be adjusted to the specific population. I will argue that both regarding empirical approaches and conceptual work, advances in research on social-cognitive development in human infants can inform the study of canine emotions.


Considering Side Biases In Vigilance And Fear, Lesley J. Rogers Jan 2017

Considering Side Biases In Vigilance And Fear, Lesley J. Rogers

Animal Sentience

Measures of vigilance and fear might be more consistently associated if side biases are taken into account, because the right side of the brain is specialised to detect predators and to express fear responses. In species with eyes positioned laterally and with relatively small binocular fields, this brain asymmetry is manifested as eye preferences because each eye sends most of its input to be processed in the opposite side of the brain. Hence, responses elicited by stimuli on the animal’s left side are more likely be associated with fear than are responses to the same stimuli on the animal’s right …


Assessing Negative And Positive Evidence For Animal Pain, Robert W. Elwood Jan 2017

Assessing Negative And Positive Evidence For Animal Pain, Robert W. Elwood

Animal Sentience

Jonathan Birch suggests that we should take one well-conducted study that produces results consistent with the idea of pain as being sufficient to invoke the animal sentience precautionary principle. Here, I consider how to balance negative and positive results from such studies using examples from my own work. I also consider which criteria of pain might provide strong inference about pain and which may prove to be weaker.


Mental Representations Are Not Necessary For Fish Consciousness, Luis H. Favela Jan 2017

Mental Representations Are Not Necessary For Fish Consciousness, Luis H. Favela

Animal Sentience

Woodruff (2017) argues that teleost fishes are capable of phenomenal consciousness. Central to his argument is the assumption that phenomenal consciousness is representational in nature. I think the commitment to a representational theory of consciousness undermines Woodruff’s case for teleost phenomenal consciousness. The reason is that organisms do not need to perceive the world indirectly via mental images/representations in order to have phenomenological experiences. My argument is based on considerations of ecological psychology and comparative ethology.


Animal Sentience? Neuroscience Has No Answers, Yoram Gutfreund Jan 2017

Animal Sentience? Neuroscience Has No Answers, Yoram Gutfreund

Animal Sentience

Woodruff’s target article provides a detailed review of comparative studies on brain and behavior in teleosts. However, the relevance of the scientific data to the question of consciousness rests solely on the validity of a small set of so-called "requirements for consciousness." I use the target article to demonstrate that the neuroscientific study of animal consciousness in general relies on external, highly questionable and unfalsifiable criteria, and therefore fails to resolve the question of which animal species are sentient. Fish behavior can be remarkably complex, but whether fish are conscious remains a matter of belief.


Learning, Memory, Cognition, And The Question Of Sentience In Fish, Robert Gerlai Jan 2017

Learning, Memory, Cognition, And The Question Of Sentience In Fish, Robert Gerlai

Animal Sentience

Evolutionarily conserved features have been demonstrated at many levels of biological organization across a variety of species. Evolutionary conservation may apply to complex behavioral phenomena too. It is thus not inconceivable that a form of sentience does exist even in the lowest order vertebrate taxon, the teleosts. How similar it is to human sentience in its level of complexity or in its multidimensional features is a difficult question, especially from an experimental standpoint, given that even the definition of human sentience is debated. Woodruff attempts a Turing-like test of fish sentience, and lists numerous neuroanatomic, neurophysiological and behavioral similarities between …


The Study Of Emotion In Animals, Thomas R. Zentall Jan 2017

The Study Of Emotion In Animals, Thomas R. Zentall

Animal Sentience

The responsiveness of dogs to humans encourages us to attribute human-like emotions to them. Indirect evidence for emotions in other animals can be obtained but one must be careful to find means of distinguishing what we believe to be evidence for such emotions from simpler mechanisms. For example, is a dog’s growl an indication of anger, fear, or possibly an unemotional defense of territory? By carefully designing experiments, we may be able to rule out alternative accounts and show better evidence for underlying emotions.


The Potential For Sentience In Fishes, Jay R. Stauffer Jr. Jan 2017

The Potential For Sentience In Fishes, Jay R. Stauffer Jr.

Animal Sentience

Balcombe’s book is filled with information on the biology, behavior, and life history of fishes. I do not agree with all his premises. I am still somewhat perplexed about the discussion of whether fish feel pain; I am not sure whether the distinction between nociception and pain makes any difference. Overall, however, his treatment of the principles of both natural and sexual selection is comprehensive and accurate, and has greatly increased my knowledge and awareness of the biology, ethology, and potential for sentience in fishes. In summary, this work has exposed me to new ideas about how to examine fishes …


Emotion In Dogs: Translational And Transformative Aspects, Silvan R. Urfer Jan 2017

Emotion In Dogs: Translational And Transformative Aspects, Silvan R. Urfer

Animal Sentience

Kujala (2017) provides an excellent overview of most aspects of emotion in dogs; however, she does not cover a few fields of research that I think are also relevant to the topic. In this commentary, I discuss the current state of our knowledge regarding cognitive decline and behavioral disorders in dogs as potential models for human neurodegenerative disease and mental illness; how emotion and cognition in dogs interact with sex, gonadectomy, and sexual behavior; as well as the transformative potential of functional MRI imaging of the conscious dog brain in the study of comparative neurophysiology.


Studying Dog Emotion Beyond Expression And Without Concern For Feeling, Peter F. Cook Jan 2017

Studying Dog Emotion Beyond Expression And Without Concern For Feeling, Peter F. Cook

Animal Sentience

Studies of dog emotion have focused on the expression of social emotion, either because this is taken to suggest human-like feeling states in dogs or because it has been the most accessible signal of dog emotional processing. I argue for an approach grounded in affective neuroscience, relying on direct measures of physiology across different contexts. This work may be particularly fertile in exploring social emotion in the dog, not because dogs necessarily share human emotional states, but because they are unique in having likely evolved to fit a human social niche.


Experiment Versus Analogy In The Search For Animal Sentience, Geoffrey Hall Jan 2017

Experiment Versus Analogy In The Search For Animal Sentience, Geoffrey Hall

Animal Sentience

Deciding between rival accounts of an instance of an animal’s behavior can frequently be achieved by experimental tests of different predictions made by the alternatives. When, however, one (or both) of the alternatives is expressed in terms of the mental state of the animal, an experimental test to distinguish them can be hard to find. Although it is unsatisfactory in many ways, it may be necessary to fall back on argument from analogy with human behavior and experience.


Establishing That Contrast Is Cognitive Dissonance, Travis R. Smith Jan 2017

Establishing That Contrast Is Cognitive Dissonance, Travis R. Smith

Animal Sentience

Zentall suggests that the same mechanism underlies cognitive dissonance in humans and the within-trial contrast effect in pigeons (and humans). The contrast effect has face validity in explaining cognitive dissonance, but more research is needed to establish construct validity. To determine whether both phenomena share the same mechanism, future research should test (1) whether both share physiological processes, (2) whether individuals who show sensitivity to one are also sensitive to the other, and (3) whether both phenomena are affected by the same changes in an independent variable.


The Emotional Brain Of Fish, Sonia Rey Planellas Jan 2017

The Emotional Brain Of Fish, Sonia Rey Planellas

Animal Sentience

Woodruff (2017) analyzes structural homologies and functional equivalences between the brains of mammals and fish to understand where sentience and social cognition might reside in teleosts. He compares neuroanatomical, neurophysiological and behavioural correlates. I discuss current advances in the study of fish cognitive abilities and emotions, and advocate an evolutionary approach to the underlying basis of sentience in teleosts.


We Still Need A Theory, Paula Droege Jan 2017

We Still Need A Theory, Paula Droege

Animal Sentience

Woodruff (2017) has compiled a convincing array of data to support his contention that teleost fish feel pain. However, in the absence of an explanatory theory about the nature and function of consciousness, a checklist of criteria is insufficient to allay skeptical concerns. I offer a theory that can explain why features like selective attention and behavioral flexibility indicate consciousness. Consciousness represents the present moment in order to allow dynamic changes in actions or goals in response to situational demands.


Battlefish Contention, Sean Allen-Hermanson Jan 2017

Battlefish Contention, Sean Allen-Hermanson

Animal Sentience

Contrary to Woodruff’s suggestion, investigations into possible reasoning capacities of cichlid fighting fish and trace memory in goldfish do not support claims about sentience. This is disputed by research results about learning and implicit processing, sleep, vegetative states, amnesia, semantic priming, artificial network modeling, and even insects. A novel, deflationary, interpretation of Grosenick et al.'s experiments on A. burtoni is also offered.


Fish Are Flexible Learners Who Can Discriminate Human Faces, Ulrike E. Siebeck Jan 2017

Fish Are Flexible Learners Who Can Discriminate Human Faces, Ulrike E. Siebeck

Animal Sentience

In his book “What a fish knows” Jonathan Balcombe (2016a, b) has created a comprehensive profile of a group of animals still often thought to have a 3-second memory, no ability to feel pain, and a generally limited ability to learn. Chapter by chapter, Balcombe dismantles these and other such assumptions and makes a convincing case that fish have many abilities that are not that different from our own. Here, I focus on one example which supports the notion that fish are flexible learners and able to perform tasks which are generally thought to require the advanced processing power of …


Fishes Are Gaining Academic Respect, Jonathan Balcombe Jan 2017

Fishes Are Gaining Academic Respect, Jonathan Balcombe

Animal Sentience

I respond to five commentaries on my 2016 book What a Fish Knows. The commentaries express more harmony than dissent about my interpretation of fishes as cognitive, aware individuals deserving better treatment by humankind.


To Identify All The Relevant Factors Is To Explain Feeling, Arthur S. Reber Jan 2017

To Identify All The Relevant Factors Is To Explain Feeling, Arthur S. Reber

Animal Sentience

Several additional comments on Reber (2016a) have appeared. Like those addressed in Reber (2016b), they reflect points of agreement and disagreement on various elements of my Cellular Basis of Consciousness (CBC) model. Some, however, seem to have missed key points. I'm willing to take some responsibility for this. Perhaps I was not clear about some of the more radical points of the model. Hopefully the case-by-case review here will help.


Consciousness Is Not Inherent In But Emergent From Life, Jon Mallatt, Todd E. Feinberg Jan 2017

Consciousness Is Not Inherent In But Emergent From Life, Jon Mallatt, Todd E. Feinberg

Animal Sentience

Reber’s theory of the cellular basis of consciousness (CBC) is right to emphasize that we should study consciousness (sentience) in its simplest form, taking its evolution into account. However, not enough evidence is presented to support CBC’s unorthodox claim that even simple, one-celled organisms are conscious. As pointed out by other commentators, the CBC seems to be based on outdated ideas about evolution and does not acknowledge that consciousness could be an evolutionary novel feature. Such emergent features are abundant in living organisms. We review our own emergentist solution, in which consciousness evolved in the elaborating nervous systems of the …


What Can Research On Nonhumans Tell Us About Human Dissonance?, Jennifer Vonk Jan 2017

What Can Research On Nonhumans Tell Us About Human Dissonance?, Jennifer Vonk

Animal Sentience

Zentall’s thoughtful review of the literature on cognitive dissonance in nonhumans helps to highlight the common finding that similar outcomes in humans and nonhumans can be attributed to different underlying mechanisms. I advocate a more fully comparative approach to the underlying mechanisms, avoiding the assumption of shared processes in humans and nonhumans.


Choice-Induced Preference: A Challenge For Contrast, Benjamin R. Eisenreich, Benjamin Y. Hayden Jan 2017

Choice-Induced Preference: A Challenge For Contrast, Benjamin R. Eisenreich, Benjamin Y. Hayden

Animal Sentience

In his target article, Zentall asks: “to experience cognitive dissonance is it necessary for one to have conflicting beliefs or even beliefs at all?” He then argues that a simple behavioral process, the Within Trial Contrast Effect, may be sufficient to explain observed cognitive dissonance effects in nonhuman animals and possibly humans as well. We agree with Zentall that this effect is sufficient to explain many reported cognitive dissonance effects in nonhuman animals, but question its sufficiency for primate behavior (both monkeys and humans).


Dissonance Reduction In Nonhuman Animals: Implications For Cognitive Dissonance Theory, Cindy Harmon-Jones, Nick Haslam, Brock Bastian Jan 2017

Dissonance Reduction In Nonhuman Animals: Implications For Cognitive Dissonance Theory, Cindy Harmon-Jones, Nick Haslam, Brock Bastian

Animal Sentience

We review the evidence for dissonance reduction in nonhuman animals and examine the alternative explanations for these effects. If nonhuman animals engage in dissonance reduction, this supports the original theory as proposed by Festinger (1957) over the revisions to the theory that focused on the self-concept. Evidence of animal sentience, including dissonance reduction, may be a source of cognitive dissonance.


Clarifying Concepts In Cognitive Dissonance Theory, Eddie Harmon-Jones Jan 2017

Clarifying Concepts In Cognitive Dissonance Theory, Eddie Harmon-Jones

Animal Sentience

This commentary on Zentall’s target article focuses primarily on clarifying some postulates and variables in cognitive dissonance theory. I discuss the adaptive motivational functions of dissonance arousal and dissonance reduction, and attempt to clarify some past dissonance experiments and to tease apart a dissonance theory and contrast explanation of effort-justification-type effects. The evidence and arguments reviewed here support the explanatory power of cognitive dissonance theory in a wide variety of circumstances in human and nonhuman animals, but they depend on first defining concepts such as “cognitions” quite broadly, as Festinger did when he originally proposed the theory.


Cognitive Dissonance Or Contrast? It Could Be Both, Thomas Zentall Jan 2017

Cognitive Dissonance Or Contrast? It Could Be Both, Thomas Zentall

Animal Sentience

My target article suggested that cognitive dissonance may be accounted for by a simpler mechanism: contrast. Whether contrast can explain all cognitive dissonance effects is an empirical question, but it is always useful to try to distinguish simpler mechanisms from more complex cognitive ones. The insistence that cognitive dissonance is a human-only process quite different from contrast may be a self-serving means of justifying the exploitation of animals.


Cognitive Continuity In Cognitive Dissonance, David R. Brodbeck, Madeleine I. R. Brodbeck Jan 2017

Cognitive Continuity In Cognitive Dissonance, David R. Brodbeck, Madeleine I. R. Brodbeck

Animal Sentience

Zentall’s (2016) model of cognitive dissonance is compatible with cognitive continuity between humans and nonhumans. It may help explain cognitive dissonance-like behavior in many species, including humans. It is also consistent with Tinbergen’s (1963) ‘four whys’ in ethological explanation.


Reef Society And The Tyranny Of Data, Robert Wintner Dec 2016

Reef Society And The Tyranny Of Data, Robert Wintner

Animal Sentience

Modern science now approaches divergent processes in many areas, including health assessments of marine eco-systems and social aspects of marine species. Scientific data have long enjoyed a reputation for objectivity but incidents of science-for-hire, data spinning/skewing and political jading are more frequent than ever. In the field of reef creature sensitivity, technical treatises can “logically” explain away what a person of average education can clearly observe on any given reef. Western medicine discounted anecdotal evidence of any cure outside the 4% margin of error until those cures demanded attention and in some cases application. Modern science must now enter an …


Still Wondering How Flesh Can Feel, Gwen J. Broude Dec 2016

Still Wondering How Flesh Can Feel, Gwen J. Broude

Animal Sentience

Reber believes he has simplified Chalmers’s “hard problem” of consciousness by arguing that subjectivity is an inherent feature of biological forms. His argument rests on the related notions of continuity of mind and gradual accretion of capacities across evolutionary time. These notions need to be defended, not just asserted. Because Reber minimizes the differences in mental faculties among species across evolutionary time, it becomes easier to assert, and perhaps believe, that sentience is already present in early biological forms. The more explicit we are about the differences among these mental faculties and the differences across species, the less persuasive is …


Animals Aren’T Persons, But Is It Time For A Neologism?, Helen Steward Dec 2016

Animals Aren’T Persons, But Is It Time For A Neologism?, Helen Steward

Animal Sentience

Mark Rowlands argues that at least some animals are persons, based on the idea that (i) many animals have a property he calls “pre-reflective awareness,” (ii) the capacity for pre-reflective awareness is sufficient to satisfy the traditional Lockean definition of personhood, and (iii) satisfaction of the traditional Lockean definition of personhood is sufficient for being a person. I agree with (i) and can see that there is a persuasive case for (ii), but I think the case against (iii) blocks the conclusion that animals are persons. I suggest that we may need instead to coin a neologism in order to …


Reber’S Caterpillar Offers No Help, Carl Safina Dec 2016

Reber’S Caterpillar Offers No Help, Carl Safina

Animal Sentience

Reber’s target article “Caterpillars, consciousness and the origins of mind” seems only to shift but not to address the question of where the mind is and how minds occur.