crta
Hrvatska znanstvena Sekcija img
bibliografija
3 gif
 Naslovna
 O projektu
 FAQ
 Kontakt
4 gif
Pregledavanje radova
Jednostavno pretraživanje
Napredno pretraživanje
Skupni podaci
Upis novih radova
Upute
Ispravci prijavljenih radova
Ostale bibliografije
Slični projekti
 Bibliografske baze podataka

Pregled bibliografske jedinice broj: 737442

Zbornik radova

Autori: Domijan, Dražen
Naslov: A neurocomputational account of mental curve tracing
Izvornik: PerceptionPion , 2012. 148.
Skup: 35th European Conference on Visual Perception
Mjesto i datum: Alghero, Italija, 02.-06.09. 2012.
Ključne riječi: Attention; Curve tracing; Neural network model
Sažetak:
A neural model is proposed whose temporal dynamics simulates the properties of mental curve tracing. Behavioral studies revealed that the tracing is a time consuming process that serially spreads attentional label along the target curve. However, the speed of tracing is not fixed and it could be flexibly adjusted depending on the density of image elements. Single-unit recordings in the monkey primary visual cortex showed that tracing is associated with elevated firing rate for neurons whose receptive field falls on the traced curve. In order to explain behavioral and neurophysiological findings, the proposed model implements a novel form of neural filling-in that enables activity spreading along the target curve. Filling-in occurs at multiple spatial scales in order to account for different speeds of tracing. The model implements object-level competition and selection among distinct image elements. Computer simulations showed that the model exhibits appropriate scaling of tracing speed with distance between curves thus simulating the hot spots of attention. The speed of tracing slows down when the curves are close to each other and speeds up when they are far apart. Furthermore, the model is able to store the traced pattern in short-term memory.
Vrsta sudjelovanja: Poster
Vrsta prezentacije u zborniku: Sažetak
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: 009-0362214-0818
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Psihologija
URL Internet adrese: http://www.perceptionweb.com/abstract.cgi?id=v120812
Upisao u CROSBI: Dražen Domijan (ddomijan@ffri.hr), 3. Pro. 2014. u 16:02 sati



Verzija za printanje   za tiskati


upomoc
foot_4