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Category: Consciousness

Could consciousness all come down to the way things vibrate?

Could consciousness all come down to the way things vibrate?

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What do synchronized vibrations add to the mind/body question? agsandrew/Shutterstock.com By Tam Hunt, University of California, Santa Barbara Why is my awareness here, while yours is over there? Why is the universe split in two for each of us, into a subject and an infinity of objects? How is each of us our own center of experience, receiving information about the rest of the world out there? Why are some things conscious and others apparently not? Is a rat conscious?…

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Octopuses on ecstasy reveal genetic link to evolution of social behaviors in humans

Octopuses on ecstasy reveal genetic link to evolution of social behaviors in humans

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Johns Hopkins University School of Medicine: By studying the genome of a kind of octopus not known for its friendliness toward its peers, then testing its behavioral reaction to a popular mood-altering drug called MDMA or “ecstasy,” scientists say they have found preliminary evidence of an evolutionary link between the social behaviors of the sea creature and humans, species separated by 500 million years on the evolutionary tree. A summary of the experiments is published Sept. 20 in Current Biology,…

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We are more than our brains

We are more than our brains

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Alan Jasanoff writes: Brains are undoubtedly somewhat computer-like – computers, after all, were invented to perform brain-like functions – but brains are also much more than bundles of wiry neurons and the electrical impulses they are famous for propagating. The function of each neuroelectrical signal is to release a little flood of chemicals that helps to stimulate or suppress brain cells, in much the way that chemicals activate or suppress functions such as glucose production by liver cells or immune…

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A theory of reality as more than the sum of its parts

A theory of reality as more than the sum of its parts

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Natalie Wolchover writes: In his 1890 opus, The Principles of Psychology, William James invoked Romeo and Juliet to illustrate what makes conscious beings so different from the particles that make them up. “Romeo wants Juliet as the filings want the magnet; and if no obstacles intervene he moves towards her by as straight a line as they,” James wrote. “But Romeo and Juliet, if a wall be built between them, do not remain idiotically pressing their faces against its opposite…

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What matters

What matters

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Owen Flanagan writes: In “The Strange Order of Things” Antonio Damasio promises to explore “one interest and one idea … why and how we emote, feel, use feelings to construct our selves; how feelings assist or undermine our best intentions; why and how our brains interact with the body to support such functions.” Damasio thinks that the cognitive revolution of the last 40 years, which has yielded cognitive science, cognitive neuroscience and artificial intelligence, has been, in fact, too cognitive,…

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The spiritual part of our brains — religion not required

The spiritual part of our brains — religion not required

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Ephrat Livni writes: Scientists seek to quantify everything—even the ineffable. And so the human search for meaning recently took a physical turn as Columbia and Yale University researchers isolated the place in our brains that processes spiritual experiences. In a new study, published in Cerebral Cortex (paywall) on May 29, neuroscientists explain how they generated “personally relevant” spiritual experiences in a diverse group of subjects and scanned their brains while these experiences were happening. The results indicate that there is…

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Theory of predictive brain as important as evolution — an interview with Lars Muckli

Theory of predictive brain as important as evolution — an interview with Lars Muckli

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Our brains make sense of the world by predicting what we will see and then updating these predictions as the situation demands, according to Lars Muckli, professor of neuroscience at the Centre for Cognitive Neuroimaging in Glasgow, Scotland. He says that this predictive processing framework theory is as important to brain science as evolution is to biology. Horizon magazine: You have used advanced brain imaging techniques to come up with a model of how the brain processes vision – and…

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Psychedelic medicine may become available sooner than you expect

Psychedelic medicine may become available sooner than you expect

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Michael Pollan writes: Just how soon might psychedelic-assisted psychotherapy be available aboveground, to the many people who stand to benefit from it? Before the F.D.A. approves a new medicine, the drug must survive testing for safety and efficacy in a three-stage sequence of trials, each of them involving a larger sample and more rigorous methods. When researchers recently brought to the F.D.A. the results of Phase 2 clinical trials of cancer patients who were given psilocybin and MDMA, they were…

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Why we need to figure out a theory of consciousness

Why we need to figure out a theory of consciousness

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All in the mind. Shutterstock By Adam Barrett, University of Sussex Understanding the biology behind consciousness (or self-awareness) is considered by some to be the final frontier of science. And over the last decade, a fledgling community of “consciousness scientists” have gathered some interesting information about the differences between conscious and unconscious brain activity. But there remains disagreement about whether or not we have a theory that actually explains what is special about the brain activity which produces our miraculous…

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The spirit molecule

The spirit molecule

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Graham St John writes: Identified in 300 BCE by the Greek physician Herophilos as the brain’s only unpaired organ, the pineal gland has long been a source of mystery and speculation. Galen, another Greek physician and philosopher, discussed its role as a valve regulating the flow of ‘psychic pneuma’. This view informed René Descartes, who in the 17th century situated the soul (for him, the mind) precisely in this tiny mid-brain structure, which he imagined to be something of a…

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A revolution in our sense of self

A revolution in our sense of self

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Nick Chater writes: At the climax of Anna Karenina, the heroine throws herself under a train as it moves out of a station on the edge of Moscow. But did she really want to die? Had the ennui of Russian aristocratic life and the fear of losing her lover, Vronsky, become so intolerable that death seemed the only escape? Or was her final act mere capriciousness, a theatrical gesture of despair, not seriously imagined even moments before the opportunity arose?…

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How new data is transforming our understanding of place cells — the brain’s GPS

How new data is transforming our understanding of place cells — the brain’s GPS

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Adithya Rajagopalan writes: The first pieces of the brain’s “inner GPS” started coming to light in 1970. In the laboratories of University College London, John O’Keefe and his student Jonathan Dostrovsky recorded the electrical activity of neurons in the hippocampus of freely moving rats. They found a group of neurons that increased their activity only when a rat found itself in a particular location. They called them “place cells.” Building on these early findings, O’Keefe and his colleague Lynn Nadel…

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Plants, people, and decision-making

Plants, people, and decision-making

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Laura Ruggles writes: Plants are not simply organic, passive automata. We now know that they can sense and integrate information about dozens of different environmental variables, and that they use this knowledge to guide flexible, adaptive behaviour. For example, plants can recognise whether nearby plants are kin or unrelated, and adjust their foraging strategies accordingly. The flower Impatiens pallida, also known as pale jewelweed, is one of several species that tends to devote a greater share of resources to growing…

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