scholarly journals Neural correlates of central versus peripheral target detection during complex visual search

2011 ◽  
Vol 11 (11) ◽  
pp. 1294-1294
Author(s):  
S. Utz ◽  
G. W. Humphreys ◽  
J. P. McCleery
Author(s):  
Christopher Rorden ◽  
Arni Kristjansson ◽  
Kathleen Pirog Revill ◽  
Styrmir Saevarsson

Author(s):  
Frank Schieber ◽  
Jess Gilland

Age differences in the useful field of view (UFOV) were assessed during real-world driving using a newly developed car-following protocol. Nineteen young (mean age = 23) and 19 older (mean age = 73) drivers were examined. Peripheral target detection performance declined significantly with age and target eccentricity. However, consistent with several recent studies, no age by target eccentricity interaction was observed. These findings contribute to the validation of the UFOV construct and provide a foundation for better understanding age-related changes in visual attention in the real-world driving domain.


2013 ◽  
Vol 1532 ◽  
pp. 32-43 ◽  
Author(s):  
Senqing Qi ◽  
Qinghong Zeng ◽  
Cody Ding ◽  
Hong Li

2010 ◽  
Vol 104 (5) ◽  
pp. 2433-2441 ◽  
Author(s):  
Richard P. Heitz ◽  
Jeremiah Y. Cohen ◽  
Geoffrey F. Woodman ◽  
Jeffrey D. Schall

The goal of this study was to obtain a better understanding of the physiological basis of errors of visual search. Previous research has shown that search errors occur when visual neurons in the frontal eye field (FEF) treat distractors as if they were targets. We replicated this finding during an inefficient form search and extended it by measuring simultaneously a macaque homologue of an event-related potential indexing the allocation of covert attention known as the m-N2pc. Based on recent work, we expected errors of selection in FEF to propagate to areas of extrastriate cortex responsible for allocating attention and implicated in the generation of the m-N2pc. Consistent with this prediction, we discovered that when FEF neurons selected a distractor instead of the search target, the m-N2pc shifted in the same, incorrect direction prior to the erroneous saccade. This suggests that such errors are due to a systematic misorienting of attention from the initial stages of visual processing. Our analyses also revealed distinct neural correlates of false alarms and guesses. These results demonstrate that errant gaze shifts during visual search arise from errant attentional processing.


NeuroImage ◽  
2006 ◽  
Vol 33 (1) ◽  
pp. 296-306 ◽  
Author(s):  
Tomoe Hayakawa ◽  
Norio Fujimaki ◽  
Toshihide Imaruoka

NeuroImage ◽  
2015 ◽  
Vol 122 ◽  
pp. 298-305 ◽  
Author(s):  
Katherine L. Roberts ◽  
Harriet A. Allen ◽  
Kevin Dent ◽  
Glyn W. Humphreys

Perception ◽  
1992 ◽  
Vol 21 (6) ◽  
pp. 765-777 ◽  
Author(s):  
Marc Green

In two studies, observers searched for a single oblique target in a field of vertical distractors. In one experiment, target detection and identification (left versus right tilt) were compared. In another experiment, detection and localization were compared for the left versus the right half of the display. Performance on all three tasks was virtually identical: if a target could be detected, it could also be identified and localized. A review of previous studies generally supports the conclusion that performance on the three tasks is similar. This argues against current search theories, which rest heavily on data showing differences in identification and localization.


Sign in / Sign up

Export Citation Format

Share Document