Download Agent zero : toward neurocognitive foundations for by Joshua M. Epstein PDF

By Joshua M. Epstein

The ultimate quantity of the Groundbreaking Trilogy on Agent-Based Modeling

In this pioneering synthesis, Joshua Epstein introduces a brand new theoretical entity: Agent_Zero. This software program person, or "agent," is endowed with targeted emotional/affective, cognitive/deliberative, and social modules. Grounded in modern neuroscience, those inner elements engage to generate saw, usually far-from-rational, person habit. whilst a number of brokers of this new sort stream and engage spatially, they jointly generate an miraculous variety of dynamics spanning the fields of social clash, psychology, public well-being, legislations, community technology, and economics.

Epstein weaves a computational tapestry with threads from Plato, Hume, Darwin, Pavlov, Smith, Tolstoy, Marx, James, and Dostoevsky, between others. This transformative synthesis of social philosophy, cognitive neuroscience, and agent-based modeling will fascinate students and scholars of each stripe. Epstein's machine courses are supplied within the booklet or on its Princeton college Press site, in addition to videos of his "computational parables."

Agent_Zero is a sign departure in what it contains (e.g., a brand new synthesis of neurally grounded inner modules), what it eschews (e.g., usual behavioral imitation), the phenomena it generates (from genocide to monetary panic), and the modeling arsenal it bargains the clinical community.

For generative social technology, Agent_Zero offers a groundbreaking imaginative and prescient and the instruments to gain it.

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A black-­lung X-­ray does not depict the feeling of respiratory distress and this fMRI does not depict the feeling of fear. But someone with a black-­lung X-­ray will almost certainly have trouble breathing. In medicine, feelings are symptoms. The instrumental readouts are signs. But signs are often correlated with symptoms, and that is my basic presumption here. There are many and varied correlates of fear, as reviewed earlier. 57 This is discussed in more detail in Part III, in connection with lesion studies.

Endocrine and autonomic responses are also dramatic, “including increased blood pressure and heart rate, diverting stored energy to exercising muscle, and inhibiting digestion” (Rodrigues, LeDoux, and Sapolsky, 2009, p. 295). The pupils dilate to allow more light to enter. The heart rate picks up, and the heart muscle contracts more strongly, driving more blood to the muscles. Contractions of selected vascular channels shift blood away from the skin and intestinal organs toward the muscles and the brain.

The neurotransmitter that triggers all these changes is norepinephrine (Bloom, Lazerson and Nelson, 2001, p. 172). 47 Contemporary scientific publications present these input-­output (and additional feedback) pathways in various levels of detail. Highly detailed is LeDoux (2007). On the experience, or “feeling,” of fear, Öhman and Wiens (2003, p. 270) paraphrase LeDoux (1996): The fear module is primitive in the sense that it was assembled by evolutionary contingencies hundreds of millions of years ago to serve in brains with little cortices.

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