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• W1988309610 abstract "In the presence of complex stimuli, in the absence of sufficient time to complete the visual parsing of a scene, or when attention is divided, an observer can only take in a subset of the features of a scene, potentially leading to poor decisions. In this paper we look at the possibility of integrating the percepts from multiple non-communicating observers as a means of achieving better joint perception and better decision making. Our approach involves the combination of brain-computer interface (BCI) technology with human behavioural responses. To test our ideas in controlled conditions, we asked observers to perform a simple visual matching task involving the rapid sequential presentation of pairs of visual patterns and the subsequent decision as whether the two patterns in a pair were the same or different. Visual stimuli were presented for insufficient time for the observers to be certain of the decision. The degree of difficulty of the task also depended on the number of matching features between the two patterns. The higher the number, the more difficult the task. We recorded the response times of observers as well as a neural feature which predicts incorrect decisions and, thus, indirectly indicates the confidence of the decisions made by the observers. We then built a composite neuro-behavioural feature which optimally combines these behavioural and neural measures. For group decisions, we tested the use of a majority rule and three further decision rules which weigh the decisions of each observer based on response times and our neural and neuro-behavioural features. Results indicate that the integration of behavioural responses and neural features can significantly improve accuracy when compared with individual performance. Also, within groups of each size, decision rules based on such features outperform the majority rnle." @default.
• W1988309610 created "2016-06-24" @default.
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• W1988309610 date "2013-02-01" @default.
• W1988309610 modified "2023-10-03" @default.
• W1988309610 title "Improving decision-making based on visual perception via a collaborative brain-computer interface" @default.
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• W1988309610 doi "https://doi.org/10.1109/cogsima.2013.6523816" @default.
• W1988309610 hasPublicationYear "2013" @default.
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