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J Exp Psychol Hum Percept Perform · Aug 2007
Spatial constraints on learning in visual search: modeling contextual cuing.
- Timothy F Brady and Marvin M Chun.
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. tfbrady@mit.edu
- J Exp Psychol Hum Percept Perform. 2007 Aug 1; 33 (4): 798-815.
AbstractPredictive visual context facilitates visual search, a benefit termed contextual cuing (M. M. Chun & Y. Jiang, 1998). In the original task, search arrays were repeated across blocks such that the spatial configuration (context) of all of the distractors in a display predicted an embedded target location. The authors modeled existing results using a connectionist architecture and then designed new behavioral experiments to test the model's assumptions. The modeling and behavioral results indicate that learning may be restricted to the local context even when the entire configuration is predictive of target location. Local learning constrains how much guidance is produced by contextual cuing. The modeling and new data also demonstrate that local learning requires that the local context maintain its location in the overall global context.(c) 2007 APA, all rights reserved
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