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Pregled bibliografske jedinice broj: 329968

Zbornik radova

Autori: Šetić, Mia; Domijan, Dražen
Naslov: A Neural Model for Attentional Modulation of Lateral Interactions in the Visual Cortex
Izvornik: Advances in Brain, Viison, and Artificial Intelligence / Mele, Francesco ; Ramella, Giuliana ; Santillo, Silvia ; Ventriglia, Francesco (ur.). - Berlin : Springer , 2007. 42-51 (ISBN: 978-3-540-75554-8).
Skup: Second International Symposium on Brain, Vision, and Artificial Intelligence
Mjesto i datum: Napulj, Italija, 10-12.10.2007
Ključne riječi: Attention; Contrast; Contour Integration; Visual Cortex; Dendritic Inhibition
Sažetak:
Neurophysiological investigations showed that attention influences neural responses in the visual cortex by modulating the amount of contextual interactions between cells. Attention acts as a gate that protects cells from lateral excitatory and inhibitory influences. A recurrent neural network based on dendritic inhibition is proposed to account for these findings. In the model, two types of inhibition are distinguished: dendritic and lateral inhibition. Dendritic inhibition regulates the amount of impact that surrounding cells may exert on a target cell via dendrites of excitatory neurons and dendrites of subpopulation of inhibitory neurons mediating lateral inhibition. Attention increases the amount of dendritic inhibition and prevents contextual interactions, while it has no effect on the target cell when there is no contextual input. Computer simulations showed that the proposed model reproduces the results of several studies about interaction between attention and horizontal connections in the visual cortex.
Vrsta sudjelovanja: Predavanje
Vrsta prezentacije u zborniku: Sažetak
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: 009-0362214-0818
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Psihologija
Upisao u CROSBI: ddomijan@ffri.hr (ddomijan@ffri.hr), 22. Tra. 2008. u 13:38 sati



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