Purchase this article with an account.
Marlene Poncet, Leila Reddy, Michele Fabre-Thorpe; A need for more information uptake but not focused attention to access basic-level representations. Journal of Vision 2012;12(1):15. doi: 10.1167/12.1.15.
Download citation file:
© 2017 Association for Research in Vision and Ophthalmology.
Complex visual scenes can be categorized at the superordinate level (e.g., animal/non-animal or vehicle/non-vehicle) without focused attention. However, rapid visual categorization at the basic level (e.g., dog/non-dog or car/non-car) requires additional processing time. Such finer categorization might, thus, require attentional resources. This hypothesis was tested in the current study with a dual-task paradigm in which subjects performed a basic-level categorization task in peripheral vision either alone (single-task condition) or concurrently with an attentionally demanding letter discrimination task (dual-task condition). Our results indicate that basic-level categorization of either biological (dog/non-dog animal) or man-made (car/non-car vehicle) stimuli requires more information uptake but can, nevertheless, be performed when attention is not fully available, presumably because it is supported by hardwired, specialized neuronal networks.
This PDF is available to Subscribers Only