A Sampling-based Framework for Probabilistic Perceptual Representation and Computation in the Cortex
| Monday, 09 January 2012 08:48 | Written by Jozsef Fiser
Utorak, 10. januar, 12h, Svecana sala Filozofskog fakulteta u Novom Sadu
Prof. Jozsef Fiser, Brandeis University, USA.
The mind’s internal representations of its environment have a crucial role in the emergence of intelligent behavior, yet there are few concrete proposals about the nature of these internal representations or the way they are acquired. Using the domain of visual recognition, I will present a framework and a combined empirical-computational program that explore these issues. First, I will demonstrate that in everyday perceptual tasks humans process not only the sensory information but also their uncertainty about that information, and they do this in a theoretically optimal manner. As such behavior assumes a probabilistic internal representation of the world, I present evidence that indeed, adults and infants develop such representations when they face a novel visual environment. I will show how this framework can cover not only low-level statistical regularities of events and features, but also more complex abstract “rules” of the sensory world, as well as internal models of higher cognitive functions.
Alkohol i adenozin – opijanje na molekularnom nivou
| Wednesday, 28 December 2011 18:32 | Written by Ana Parabucki
Nije novost da etanol utiče na funkciju neurotransmiterskog sistema, menjajući pri tom izgled i ponašanje sinapsi. Vrlo dobro znamo i da, u pogledu zavisnosti, neki od nas podnose alkohol bolje od drugih. A sada možda znamo i zašto je to tako.
Ana Parabucki, Institut za biološka istraživanja "Siniša Stanković"
Vreme predavanja: Četvrtak, 29. decembar 2011. u 15h, LEP
Matematika u delima S. Dalija i V. Vazarelija
| Thursday, 22 December 2011 14:39 | Written by Jablan Slavik
Na predavanju biće razmatrane primene matematičkih objekata i ideja u delima S. Dalija i V. Vazarelija: pravilnih poliedara, teselacija, grupa simetrija, topoloških transformacija, perspektive, fraktala...
Vreme predavanja: Četvrtak, 22. decembar 2011. u 15h
Decision time and uncertainty: evidence for a sampling-based representation in human vision
| Monday, 19 December 2011 11:31 | Written by Marjena Popovic
Marjena Popović, Brandeis University, USA
Vreme predavanja: Utorak, 20. decembar, u 12h, Svečana sala Filozofskog fakulteta u Novom Sadu
Mentalni pejzaž budućih majki: Psihološki procesi pri tranziciji u materinstvo kod trudnica različitih obrazaca vezanosti
| Tuesday, 13 December 2011 12:59 | Written by Nataša Hanak
Četvrtak, 15. decembar 2011. u 15h, LEP
Inspirisano shvatanjem o konstelaciji materinstva i drugim pokušajima da se opišu ključni aspekti tranzicije u materinstvo na mentalnom planu, ovo istraživanje ispituje razlike u mentalnim reprezentacijama, očekivanjima, anksioznostima i prenatalnoj vezanosti kod trudnica sigurnih i nesigurnih obrazaca vezanosti. Rezultati istraživanja su potvrdili da postoje složene veze između svih ispitivanih aspekata unutrašnjeg sveta u periodu trudnoće, te da svaki od nesigurnih obrazaca vezanosti nosi specifičan rizik za optimalnu tranziciju u
materinstvo.
P1 and N170 face-to-face: When does the human brain distinguish between visual object categories
| Monday, 12 December 2011 14:37 | Written by Prof. Guillaume Thierry
Utorak, 13. decembar, u 12h, Svecana sala Filozofskog fakulteta u Novom Sadu
Prof. Guillaume Thierry
The human face is the most studied object category in visual neuroscience. In a quest for markers of face processing, event-related potential (ERP) studies have debated whether two peaks of activity –P1 and N170– are category-selective. I will briefly present datasets from six studies involving two-by-two experimental designs showing that P1 mean amplitude significantly distinguishes faces from cars –an object category often compared to faces– independently of modulations elicited by inter-stimulus variability, external feature cropping, and inter-category morphing:
Pogrešno vidim, ispravno delam – propriocepcija i opažaj daljine
| Monday, 12 December 2011 14:26 | Written by Oliver Toskovic
Četvrtak, 08. decembar 2011. u 15h, LEP
Na opažaj daljine, ili opažaj položaja objekata u spoljašnjem svetu, pored vizuelnih utiču i informacije o položaju glave i tela u prostoru. Ova pojava nejednakosti opažene daljine na različitim pravcima posmatranja naziva se anizotropija. Pitanje je naravno zbog čega dolazi do anizotropije i kakva bi bila njena funkcija u percepciji i akciji. Jedan od odgovora bi mogao da leži u odnosu akcije prema pravcu gravitacione sile, odnosno u težini izvođenja akcije na pravcima različito orijentisanim prema pravcu delovanja gravitacione sile. U seriji ranijih istraživanja pokazano je da postoji anizotropija opažene daljine i da je ona takva da potvrđuje hipotezu o integrisanju gravitacione sile u perceptivno akcione sheme. Cilj ovih eksperimenata jeste da se pokaže da li vizuelni sistem pri proceni daljine, pored gravitacije, uzima u obzir i druge sile koje deluju na telo, kao i to da anizotropija opažene daljine postoji i u drugim čulnim modalitetima.
Web KoEd
Obaveštenja iz nauke
- The German Diaspora in Eastern and Central Europe and the former Soviet
- Communism, Nationalism and State Building in Post-War Europe
- Ottoman Inter-Confessional Dialectics in the 19th and early 20th Centuries
- Feminisms in a transnational perspective
- Re-public, The politics of fear and the rise of far-right extremism in Europe
- National Identity and Transnational Entanglement. East Central Europe in the ‘Long; 19th Century
- Commodities and Culture in the "Other" Europe 1800-1945
- Mainstream and Dissident Scientific Networks Between the Balkans and Germany
British J. Philos. Sci
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Information-Theoretic Statistical Mechanics without Landauer's Principle
This article distinguishes two different senses of information-theoretic approaches to statistical mechanics that are often conflated in the literature: those relating to the thermodynamic cost of computational processes and those...
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Editorial
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On the Faithful Interpretation of Pure Wave Mechanics
Given Hugh Everett III's understanding of the proper cognitive status of physical theories, his relative-state formulation of pure wave mechanics arguably qualifies as an empirically acceptable physical theory. The argument...