A model of human visual search is proposed. It predicts both response time (RT) and error rates (RT) as a function of image parameters such as target contrast and clutter. The model is an ideal observer, in that it optimizes the Bayes ratio of target present vs target absent. The ratio is computed on the firing pattern of V1/V2 neurons, modeled by Poisson distributions. The optimal mechanism for integrating information over time is shown to be a ‘soft max’ of diffusions, computed over the visual field by ‘hypercolumns’ of neurons that share the same receptive field and have different response properties to image features. An approximation of the optimal Bayesian observer, based on integrating local decisions, rather than diffusions, is a...
Researchers and practitioners across many fields would benefit from the ability to predict human sea...
A mathematical model accounting for both accuracy and response time (RT) data in standard visual sea...
Copyright International Society for PsychophysicsRapid visual search, depending on iconic memory, is...
A model of human visual search is proposed. It predicts both response time (RT) and error rates (RT)...
Searching for objects among clutter is a key ability of the visual system. Speed and accuracy are th...
Many visual search experiments measure response time (RT) as their primary dependent variable. Analy...
The ability to search efficiently for a target in a cluttered environment is one of the most remarka...
Chetverikov, Campana, and Kristjansson (2017) used visual search to demonstrate that human observers...
AbstractMany experiments have investigated visual search for simple stimuli like colored bars or alp...
For the most part current models of visual search assume that limits on capacity are not exceeded an...
Unlike laboratory experiments, real-world visual search can contain multiple targets. Searching for ...
Click on the DOI link to access this article (may not be free)Many experiments have investigated vis...
A key phenomenon in visual search experiments is the linear relation of reaction time (RT) to the nu...
In trouble-shooting, subjects choose the order in which they test hypotheses. This choice often invo...
Our brains process sensory information to infer the state of the world. However, the input from our ...
Researchers and practitioners across many fields would benefit from the ability to predict human sea...
A mathematical model accounting for both accuracy and response time (RT) data in standard visual sea...
Copyright International Society for PsychophysicsRapid visual search, depending on iconic memory, is...
A model of human visual search is proposed. It predicts both response time (RT) and error rates (RT)...
Searching for objects among clutter is a key ability of the visual system. Speed and accuracy are th...
Many visual search experiments measure response time (RT) as their primary dependent variable. Analy...
The ability to search efficiently for a target in a cluttered environment is one of the most remarka...
Chetverikov, Campana, and Kristjansson (2017) used visual search to demonstrate that human observers...
AbstractMany experiments have investigated visual search for simple stimuli like colored bars or alp...
For the most part current models of visual search assume that limits on capacity are not exceeded an...
Unlike laboratory experiments, real-world visual search can contain multiple targets. Searching for ...
Click on the DOI link to access this article (may not be free)Many experiments have investigated vis...
A key phenomenon in visual search experiments is the linear relation of reaction time (RT) to the nu...
In trouble-shooting, subjects choose the order in which they test hypotheses. This choice often invo...
Our brains process sensory information to infer the state of the world. However, the input from our ...
Researchers and practitioners across many fields would benefit from the ability to predict human sea...
A mathematical model accounting for both accuracy and response time (RT) data in standard visual sea...
Copyright International Society for PsychophysicsRapid visual search, depending on iconic memory, is...