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pro vyhledávání: '"Zachary P Kilpatrick"'
Autor:
Tahra L Eissa, Zachary P Kilpatrick
Publikováno v:
PLoS Computational Biology, Vol 19, Iss 11, p e1011622 (2023)
Experience shapes our expectations and helps us learn the structure of the environment. Inference models render such learning as a gradual refinement of the observer's estimate of the environmental prior. For instance, when retaining an estimate of a
Externí odkaz:
https://doaj.org/article/38a305574c5742eeb4660559ac121546
Publikováno v:
eLife, Vol 11 (2022)
Models based on normative principles have played a major role in our understanding of how the brain forms decisions. However, these models have typically been derived for simple, stable conditions, and their relevance to decisions formed under more n
Externí odkaz:
https://doaj.org/article/61b09d595f134089bbadc8b426dd1d18
Publikováno v:
PLoS Computational Biology, Vol 18, Iss 7, p e1010323 (2022)
Solutions to challenging inference problems are often subject to a fundamental trade-off between: 1) bias (being systematically wrong) that is minimized with complex inference strategies, and 2) variance (being oversensitive to uncertain observations
Externí odkaz:
https://doaj.org/article/ce1c1a6ddce44603a87fd2c6a144943f
Publikováno v:
eLife, Vol 11 (2022)
Deliberative decisions based on an accumulation of evidence over time depend on working memory, and working memory has limitations, but how these limitations affect deliberative decision-making is not understood. We used human psychophysics to assess
Externí odkaz:
https://doaj.org/article/cdec7f3cf48f4475a4a549bf9efa00d7
Autor:
Zachary P Kilpatrick
Publikováno v:
Frontiers in Computational Neuroscience, Vol 7 (2013)
Persistent activity observed during delayed-response tasks for spatial working memory (Funahashi et al 1989) has commonly been modeled by recurrent networks whose dynamics is described as a "bump attractor" (Compte et al 2000). We examine the effects
Externí odkaz:
https://doaj.org/article/a15f34be657b44fd8b220f05832dd354
Autor:
Zachary P Kilpatrick
Publikováno v:
Frontiers in Computational Neuroscience, Vol 7 (2013)
Competitive neural networks are often used to model the dynamics of perceptual bistability. Switching between percepts can occur through fluctuations and/or a slow adaptive process. Here, we analyze switching statistics in competitive networks with s
Externí odkaz:
https://doaj.org/article/d122c7fa5a9a4e93a5ab17c252151e0a
Autor:
Zachary P Kilpatrick, Bard Ermentrout
Publikováno v:
PLoS Computational Biology, Vol 7, Iss 11, p e1002281 (2011)
Gamma rhythms (30-100 Hz) are an extensively studied synchronous brain state responsible for a number of sensory, memory, and motor processes. Experimental evidence suggests that fast-spiking interneurons are responsible for carrying the high frequen
Externí odkaz:
https://doaj.org/article/bbb6ce84a84244e38aad7fc9c2aeafa4
Publikováno v:
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 479
Optimal designs minimize the number of experimental runs (samples) needed to accurately estimate model parameters, resulting in algorithms that, for instance, efficiently minimize parameter estimate variance. Governed by knowledge of past observation
Publikováno v:
Physical review research. 4(3)
Animals typically forage in groups. Social foraging can help animals avoid predation and decrease their uncertainty about the richness of food resources. Despite this, theoretical mechanistic models of patch foraging have overwhelmingly focused on th