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Sapiens : "Claire Sergent : « Quand la conscience empêche de voir »" - La Rec... - 0 views

www.larecherche.fr/...article cerveau attention
shared by Michel Roland-Guill on 01 Jul 12 - Cached
  • Deux théories s'affrontent en effet sur la différence entre perception consciente et non consciente. L'une, alimentée surtout par les études en IRM, prédit qu'il y a une sorte de continuité entre les deux types de traitement : le non-conscient correspondrait à l'activation des mêmes aires cérébrales que le conscient mais avec une intensité moindre. L'autre prédit qu'il existe au contraire une rupture. Nous avons déjà obtenu dans notre laboratoire des résultats allant dans le sens de cette deuxième théorie.
  • Nous avons trouvé que la perception consciente du deuxième mot dépend de la vitesse à laquelle est traité le premier. Nous avons identifié une différence dans la dynamique d'une onde appelée P300 correspondant à l'activité d'un réseau fronto-pariétal. Lorsque le sujet voit le deuxième mot, c'est que cette onde a été rapide pour le premier mot, avec un pic élevé très tôt. Mais, s'il ne voit pas le deuxième mot, l'onde P300 a été moins intense et plus longue pour le premier mot, et elle est carrément absente pour le deuxième mot. C'est donc que le traitement plus long de l'onde P300 pour le premier mot empêche le second d'être perçu.
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Your Brain on Google: Patterns of Cerebral Activation during... : American Journal of G... - 0 views

journals.lww.com/...e__patterns_of_cerebral.4.aspx Gary Small cerveau
shared by Michel Roland-Guill on 11 Sep 11 - No Cached
  • significant increases in signal intensity in additional regions controlling decision making, complex reasoning, and vision
  • Michel Roland-Guill on 11 Sep 11
     
    "Your Brain on Google: Patterns of Cerebral Activation during Internet Searching"
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The End of Solitude - The Chronicle Review - The Chronicle of Higher Education - 0 views

chronicle.com/...3708 solitude internet attention
shared by Michel Roland-Guill on 20 May 12 - Cached
  • The camera has created a culture of celebrity; the computer is creating a culture of connectivity. As the two technologies converge — broadband tipping the Web from text to image, social-networking sites spreading the mesh of interconnection ever wider — the two cultures betray a common impulse. Celebrity and connectivity are both ways of becoming known. This is what the contemporary self wants. It wants to be recognized, wants to be connected: It wants to be visible.
  • I once asked my students about the place that solitude has in their lives. One of them admitted that she finds the prospect of being alone so unsettling that she'll sit with a friend even when she has a paper to write. Another said, why would anyone want to be alone?
  • Man may be a social animal, but solitude has traditionally been a societal value. In particular, the act of being alone has been understood as an essential dimension of religious experience, albeit one restricted to a self-selected few. Through the solitude of rare spirits, the collective renews its relationship with divinity.
  • ...22 more annotations...
  • Communal experience is the human norm, but the solitary encounter with God is the egregious act that refreshes that norm.
  • Like other religious values, solitude was democratized by the Reformation and secularized by Romanticism.
  • The child who grew up between the world wars as part of an extended family within a tight-knit urban community became the grandparent of a kid who sat alone in front of a big television, in a big house, on a big lot. We were lost in space. Under those circumstances, the Internet arrived as an incalculable blessing
  • For Emerson, "the soul environs itself with friends, that it may enter into a grander self-acquaintance or solitude; and it goes alone, for a season, that it may exalt its conversation or society."
  • Romantic solitude existed in a dialectical relationship with sociability
  • Protestant self-examination becomes Freudian analysis, and the culture hero, once a prophet of God and then a poet of Nature, is now a novelist of self — a Dostoyevsky, a Joyce, a Proust.
  • Modernism decoupled this dialectic. Its notion of solitude was harsher, more adversarial, more isolating. As a model of the self and its interactions, Hume's social sympathy gave way to Pater's thick wall of personality and Freud's narcissism — the sense that the soul, self-enclosed and inaccessible to others, can't choose but be alone. With exceptions, like Woolf, the modernists fought shy of friendship. Joyce and Proust disparaged it; D.H. Lawrence was wary of it; the modernist friendship pairs — Conrad and Ford, Eliot and Pound, Hemingway and Fitzgerald — were altogether cooler than their Romantic counterparts.
  • My students told me they have little time for intimacy. And of course, they have no time at all for solitude. But at least friendship, if not intimacy, is still something they want.
  • In fact, their use of technology — or to be fair, our use of technology — seems to involve a constant effort to stave off the possibility of solitude, a continuous attempt, as we sit alone at our computers, to maintain the imaginative presence of others.
  • The two emotions, loneliness and boredom, are closely allied. They are also both characteristically modern. The Oxford English Dictionary's earliest citations of either word, at least in the contemporary sense, date from the 19th century.
  • the previous generation's experience of boredom
  • The more we keep aloneness at bay, the less are we able to deal with it and the more terrifying it gets.
  • Boredom is not a necessary consequence of having nothing to do, it is only the negative experience of that state. Television, by obviating the need to learn how to make use of one's lack of occupation, precludes one from ever discovering how to enjoy it. In fact, it renders that condition fearsome, its prospect intolerable. You are terrified of being bored — so you turn on the television.
  • consumer society wants to condition us to feel bored, since boredom creates a market for stimulation.
  • The alternative to boredom is what Whitman called idleness: a passive receptivity to the world.
  • Loneliness is not the absence of company, it is grief over that absence.
  • Internet is as powerful a machine for the production of loneliness as television is for the manufacture of boredom.
  • And losing solitude, what have they lost? First, the propensity for introspection, that examination of the self that the Puritans, and the Romantics, and the modernists (and Socrates, for that matter) placed at the center of spiritual life — of wisdom, of conduct. Thoreau called it fishing "in the Walden Pond of [our] own natures," "bait[ing our] hooks with darkness." Lost, too, is the related propensity for sustained reading.
  • Solitude, Emerson said, "is to genius the stern friend." "He who should inspire and lead his race must be defended from traveling with the souls of other men, from living, breathing, reading, and writing in the daily, time-worn yoke of their opinions." One must protect oneself from the momentum of intellectual and moral consensus — especially, Emerson added, during youth.
  • The university was to be praised, Emerson believed, if only because it provided its charges with "a separate chamber and fire" — the physical space of solitude. Today, of course, universities do everything they can to keep their students from being alone, lest they perpetrate self-destructive acts, and also, perhaps, unfashionable thoughts.
  • The last thing to say about solitude is that it isn't very polite.
  • the ability to stand back and observe life dispassionately, is apt to make us a little unpleasant to our fellows
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Day One - Mac Journal Application for iPhone, iPad and Mac Desktop - 1 views

dayoneapp.com outil écrire app iphone mac
shared by Michel Roland-Guill on 17 May 12 - No Cached
  • Michel Roland-Guill on 17 May 12
     
    The easiest to use journal / diary / text logging application for the Mac is also the best looking. Day One is designed and focused to encourage you to write more. Using the Menu Bar quick entry, Reminder system, Calendar view and inspirational messages your memories and thoughts will be preserved. iCloud or Dropbox sync allows easy backup and syncing with the Day One iPhone and iPad applications.

The REAP Project - 0 views

reap.cs.cmu.edu
shared by Gabriel Gallezot on 06 May 12 - Cached
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