TY - GEN ID - cogprints1915 UR - http://cogprints.org/1915/ A1 - Bednar, James A. A1 - Miikkulainen, Risto Y1 - 2000/07// N2 - RF-LISSOM, a self-organizing model of laterally connected orientation maps in the primary visual cortex, was used to study the psychological phenomenon known as the tilt aftereffect. The same self-organizing processes that are responsible for the long-term development of the map are shown to result in tilt aftereffects over short time scales in the adult. The model permits simultaneous observation of large numbers of neurons and connections, making it possible to relate high-level phenomena to low-level events, which is difficult to do experimentally. The results give detailed computational support for the long-standing conjecture that the direct tilt aftereffect arises from adaptive lateral interactions between feature detectors. They also make a new prediction that the indirect effect results from the normalization of synaptic efficacies during this process. The model thus provides a unified computational explanation of self-organization and both the direct and indirect tilt aftereffect in the primary visual cortex. PB - MIT Press KW - tilt aftereffect KW - tilt after-effect KW - tilt aftereffects KW - tilt after-effects KW - TAE KW - tilt illusions KW - TI KW - orientation aftereffects KW - orientation after-effects KW - orientation illusions KW - visual illusions KW - aftereffects KW - illusions KW - primary visual cortex KW - self-organization KW - orientation maps KW - neural networks KW - perception KW - vision KW - visual development KW - visual function KW - computational neuroscience KW - normalization KW - synapses KW - short-term plasticity KW - resource redistribution KW - neuronal regulation KW - homeostasis KW - direct effect KW - indirect effect KW - adaptation KW - psychophysics TI - Tilt Aftereffects in a Self-Organizing Model of the Primary Visual Cortex SP - 1721 AV - public EP - 1740 ER -