Vagueness and the Evolution of Consciousness

2021 ◽  
Author(s):  
Michael Tye
Keyword(s):  
Animal Behavior ◽  
Complex I ◽  
Central Element ◽  
Fundamental Feature ◽  
Borderline Cases ◽  
Evolution Of Consciousness ◽  
The Brain ◽  
The Way

Either consciousness appeared suddenly in living beings so that its appearance is like that of a light switch being turned on or it arose through intermediate stages. On the former view, consciousness is an on/off matter, but once it arose, it became richer and richer through time rather as a beam of light may become brighter and broader in its sweep. On the latter view, consciousness is not an on/off matter. There are shades of gray. Consciousness arose gradually just as life did, becoming richer through time as animal brains became more complex. I argue that both these views encounter insuperable difficulties and thus that a kind of paradox arises. The way out of the paradox is to accept that the various species of consciousness are vague, admitting of borderline cases, and are to be accounted for within a representationalist view of conscious states but that consciousness itself, or rather a central element of consciousness I call “consciousness*”, is sharp. Consciousness*, I claim, is a fundamental feature of micro-reality, and thus it did not evolve, unlike conscious states. The view with which I end up presents novel solutions to three important problems (of undirected consciousness, of combination, and of tiny, psychological subjects). It also takes up the question of how consciousness can be causally efficacious with respect to animal behavior. The final chapter of the book turns to the question of where in the brain macro-consciousness is located and which animal brains so evolved as to support conscious states.

Authority by Allusion

2017 ◽  
Author(s):  
Rebecca Skreslet Hernandez
Keyword(s):  
Social Media ◽  
Fifteenth Century ◽  
Islamic Law ◽  
Religious Institutions ◽  
Political Arena ◽  
Modern Era ◽  
The Way

The final chapter brings the discussion of al-Suyūṭī’s legal persona squarely into the modern era. The discussion explores how contemporary jurists in Egypt use the legacy of the great fifteenth-century scholar in their efforts to frame their identity and to assert authority as interpreters and spokesmen for the Sharīʿa in a political arena that is fraught with tension. In the midst of Mursī’s embattled presidency, leading scholars at Egypt’s state religious institutions rushed to news and social media outlets to affirm their status as representatives of “orthodoxy” and to distance themselves from more extreme salafī trends that threaten to change the way Islamic law is practiced in the modern Egyptian state. It is striking how closely the image of the moderate Sunni, Sufi-minded, theologically sound scholar grounded in the juristic tradition (according to the accepted legal schools) fits with the persona that al-Suyūṭī strove so tenaciously to construct.

A New Hope

2018 ◽  
Author(s):  
Zoran Oklopcic
Keyword(s):  
Popular Sovereignty ◽  
The People ◽  
Collective Self ◽  
The Relationship ◽  
The Way

As the final chapter of the book, Chapter 10 confronts the limits of an imagination that is constitutional and constituent, as well as (e)utopian—oriented towards concrete visions of a better life. In doing so, the chapter confronts the role of Square, Triangle, and Circle—which subtly affect the way we think about legal hierarchy, popular sovereignty, and collective self-government. Building on that discussion, the chapter confronts the relationship between circularity, transparency, and iconography of ‘paradoxical’ origins of democratic constitutions. These representations are part of a broader morphology of imaginative obstacles that stand in the way of a more expansive constituent imagination. The second part of the chapter focuses on the most important five—Anathema, Nebula, Utopia, Aporia, and Tabula—and closes with the discussion of Ernst Bloch’s ‘wishful images’ and the ways in which manifold ‘diagrams of hope and purpose’ beyond the people may help make them attractive again.

Beauty, Morality, and the Promise of Happiness

2017 ◽  
Author(s):  
Sarah Stewart-Kroeker
Keyword(s):  
Human Life ◽  
Iris Murdoch ◽  
Fundamental Feature ◽  
The Way

This chapter takes up the themes of Chapter 3—loving beauty’s formative power—in a dialogue with contemporary philosophers Alexander Nehamas and Elaine Scarry, as well as with (to a lesser extent) Iris Murdoch. It explores the nature of love, beauty, and morality through a dialogue across historical–contemporary, theological–philosophical lines. A number of prominent modern criticisms of Augustine focus on a fundamental feature of his thought: that everything in human life is ordered towards the promise of heavenly happiness. This chapter shows some of the resources Augustine offers contemporary discussions of aesthetics by arguing that the way he links beauty and morality accounts for the ethical demands of love elicited by attraction to beauty.

8. Retrospect of Mental Philosophy (Periodical Literature.)

1880 ◽  
Vol 26 (113) ◽  
pp. 119
Author(s):  
B. F. C. Costelloe
Keyword(s):  
Periodical Literature ◽  
Main Interest ◽  
Intended Meaning ◽  
Border Line ◽  
Emotional Language ◽  
Ordinary Power ◽  
The Moment ◽  
The Brain ◽  
The Way

The first number for the year is not remarkable for any paper of striking value. Readers of the Journal will be chiefly attracted by the long and clearly written resumé of Dr. Hughlings Jackson's recent studies “On Affections of Speech from Disease of the Brain,” which is contributed by Mr. James Sully. He remarks on the great value of Dr. Jackson's attempts to classify the different forms of aphasia under the three main heads or stages of—(1) Defect of Speech, in which the patient has a full vocabulary, but confuses words; (2) Loss of Speech, in which the patient is practically speechless, and his pantomimic power is impaired as well; and (3) Loss of Language, in which, besides being speechless, he has altogether lost the power of pantomime, and even his faculty of emotional language is deeply involved in the wreck. All these states or stages again are, properly speaking, to be distinguished altogether from affections of speech in the way of loss of articulation (owing to paralysis of the tongue, &c.), or loss of vocalisation (owing to disease of the larynx); whereas the three degrees or stages of aphasia proper are due to a deep-seated and severe disorganisation of the brain. The main interest of the theory lies in the ingenious and carefully-argued analysis of the symptoms, by which Dr. Jackson arrives at the theory that as the process of destruction goes on, the superior “layers” or strata of speech fail first—those namely which involve the ordinary power of adapting sounds to the circumstances of the moment as they arise; after them fail the “more highly organized utterances” those, namely, which have in any way become automatic, such as “come on,” “wo! wo!” and even “yes” and “no,” which stand on the border-line between emotional and intellectual language; next fails the power of adapting other than vocal signs to convey an intended meaning, which is called, rather clumsily, “pantomimic propositionising;” and last of all dies out the power of uttering sounds or making signs expressive merely of emotion—a power which, of course, is not true speech at all.

scholarly journals Synergistic Effect of Several Neurotransmitters in PFC-NAc-VTA Neural Circuit for the Anti-Depression Effect of Shuganheweitang in a Chronic Unpredictable Mild Stress Model

2021 ◽  
Vol 16 (3) ◽  
pp. 1934578X2110024
Author(s):  
Xin Chen ◽  
Yuanchun Ma ◽  
Xiongjun Mou ◽  
Hao Liu ◽  
Hao Ming ◽  
...  
Keyword(s):  
Animal Behavior ◽  
Neural Circuit ◽  
Concentration Level ◽  
Brain Regions ◽  
Mild Stress ◽  
Depression Effect ◽  
Monoamine Neurotransmitters ◽  
Reward Circuitry ◽  
High Doses ◽  
The Brain

Depression, a major worldwide mental disorder, leads to massive disability and can result in death. The PFC-NAc-VTA neuro circuit is related to emotional, neurovegetative, and cognitive functions, which emerge as a circuit-level framework for understanding reward deficits in depression. Neurotransmitters, which are widely distributed in different brain regions, are important detected targets for the evaluation of depression. Shuganheweitang (SGHWT) is a popular prescription in clinical therapy for depression. In order to investigate its possible pharmacodynamics and anti-depressive mechanism, the complex plant material was separated into different fractions. These in low and high doses, along with low and high doses of SGHWT were tested in animal behavior tests. The low and high doses of SGHWT were more effective than the various fractions, which indicate the importance of synergistic function in traditional Chinese medicine. Furthermore, amino acid (GABA, Glu) and monoamine neurotransmitters (DA, 5-HT, NA, 5-HIAA) in the PFC-NAc-VTA neuro circuit were investigated by UPLC-MS/MS. The level trend of DA and 5-HT were consistent in the PFC-NAc-VTA neuro circuit, whereas 5-HIAA was decreased in the PFC, Glu was decreased in the PFC and VTA, and NA and GABA were decreased in the NAc. The results indicate that the pathogenesis of depression is associated with dysfunction of the PFC-NAc-VTA neural circuit, mainly through the neural projection effects of neurotransmitters associated with various brain regions in the neural circuit. PCA and OPLS-DA score plots demonstrated the similarities of individuals within each group and the differences among the groups. In this study, SGHWT could regulate the concentration level of different neurotransmitters in the PFC-NAc-VTA neuro circuit to improve the depression, which benefitted from the recognition of the brain reward circuitry in mood disorders.

scholarly journals Inferring brain-computational mechanisms with models of activity measurements

2016 ◽  
Vol 371 (1705) ◽  
pp. 20160278 ◽  
Author(s):  
Nikolaus Kriegeskorte ◽  
Jörn Diedrichsen
Keyword(s):  
Computational Models ◽  
Brain Activity ◽  
Visual Object ◽  
Visual Object Recognition ◽  
Summary Statistics ◽  
Activity Data ◽  
Individual Measurement ◽  
Activity Measurements ◽  
The Brain ◽  
The Way

High-resolution functional imaging is providing increasingly rich measurements of brain activity in animals and humans. A major challenge is to leverage such data to gain insight into the brain's computational mechanisms. The first step is to define candidate brain-computational models (BCMs) that can perform the behavioural task in question. We would then like to infer which of the candidate BCMs best accounts for measured brain-activity data. Here we describe a method that complements each BCM by a measurement model (MM), which simulates the way the brain-activity measurements reflect neuronal activity (e.g. local averaging in functional magnetic resonance imaging (fMRI) voxels or sparse sampling in array recordings). The resulting generative model (BCM-MM) produces simulated measurements. To avoid having to fit the MM to predict each individual measurement channel of the brain-activity data, we compare the measured and predicted data at the level of summary statistics. We describe a novel particular implementation of this approach, called probabilistic representational similarity analysis (pRSA) with MMs, which uses representational dissimilarity matrices (RDMs) as the summary statistics. We validate this method by simulations of fMRI measurements (locally averaging voxels) based on a deep convolutional neural network for visual object recognition. Results indicate that the way the measurements sample the activity patterns strongly affects the apparent representational dissimilarities. However, modelling of the measurement process can account for these effects, and different BCMs remain distinguishable even under substantial noise. The pRSA method enables us to perform Bayesian inference on the set of BCMs and to recognize the data-generating model in each case. This article is part of the themed issue ‘Interpreting BOLD: a dialogue between cognitive and cellular neuroscience’.

Endovascular Advances for Brain Arteriovenous Malformations

Neurosurgery ◽  
2014 ◽  
Vol 74 (suppl_1) ◽  
pp. S74-S82 ◽  
Author(s):  
R. Webster Crowley ◽  
Andrew F. Ducruet ◽  
Cameron G. McDougall ◽  
Felipe C. Albuquerque
Keyword(s):  
Endovascular Treatment ◽  
Surgical Resection ◽  
Arteriovenous Malformations ◽  
Treatment Options ◽  
Brain Arteriovenous Malformations ◽  
Short Period ◽  
Cerebral Avms ◽  
Brain Avms ◽  
The Brain ◽  
The Way

Abstract Arteriovenous malformations (AVMs) of the brain represent unique challenges for treating physicians. Although these lesions have traditionally been treated with surgical resection alone, advancements in endovascular and radiosurgical therapies have greatly expanded the treatment options for patients harboring brain AVMs. Perhaps no subspecialty within neurosurgery has seen as many advancements over a relatively short period of time as the endovascular field. A number of these endovascular innovations have been designed primarily for cerebral AVMs, and even those advancements that are not particular to AVMs have resulted in substantial changes to the way cerebral AVMs are treated. These advancements have enabled the embolization of cerebral AVMs to be performed either as a stand-alone treatment, or in conjunction with surgery or radiosurgery. Perhaps nothing has impacted the treatment of brain AVMs as substantially as the development of liquid embolics, most notably Onyx and n-butyl cyanoacrylate. However, of near-equal impact has been the innovations seen in the catheters that help deliver the liquid embolics to the AVMs. These developments include flow-directed catheters, balloon-tipped catheters, detachable-tipped catheters, and distal access catheters. This article aims to review some of the more substantial advancements in the endovascular treatment of brain AVMs and to discuss the literature surrounding the expanding indications for endovascular treatment of these lesions.

Minds and brains: angels, humans, and brutes

1982 ◽  
Vol 57 (3) ◽  
pp. 309-315
Author(s):  
Mortimer J. Adler
Keyword(s):  
Nervous System ◽  
Animal Behavior ◽  
Personal Experience ◽  
Human Beings ◽  
Content Type ◽  
The Past ◽  
Wide Range ◽  
Conceptual Thought ◽  
The Brain ◽  
Fine Print

✓ In his 1982 Cushing oration, a distinguished philosopher, author, and discerning critic presents a distillate of his phenomenally wide range of personal experience and his familiarity with the great books and teachers of the present and the past. He explores the differences and relationships between human beings, brute animals, and machines. Knowledge of the brain and nervous system contribute to the explanation of all aspects of animal behavior, intelligence, and mentality, but cannot completely explain human conceptual thought.

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