Frontal cortex differentiates between free and imposed target selection in multiple-target search
Frontal cortex differentiates between free and imposed target selection in multiple-target search
复制标题
额叶皮层区分多目标搜索中的自由目标选择和强制目标选择
DOI:
10.1016/j.neuroimage.2019.116133
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发表时间:
2019
期刊:
影响因子:
5.7
通讯作者:
C.N.L.
中科院分区:
文献类型:
--
作者:
Fahrenfort;Reeder;Pollmann;Olivers;C.N.L.
Cognitive control can involve proactive (preparatory) and reactive (corrective) mechanisms. Using a gaze-contingent eye tracking paradigm combined with fMRI, we investigated the involvement of these different modes of control and their underlying neural networks, when switching between different targets in multiple-target search. Participants simultaneously searched for two possible targets presented among distractors, and selected one of them. In one condition, only one of the targets was available in each display, so that the choice was imposed, and reactive control would be required. In the other condition, both targets were present, giving observers free choice over target selection, and allowing for proactive control. Switch costs emerged only when targets were imposed and not when target selection was free. We found differential levels of activity in the frontoparietal control network depending on whether target switches were free or imposed. Furthermore, we observed core regions of the default mode network to be active during target repetitions, indicating reduced control on these trials. Free and imposed switches jointly activated parietal and posterior frontal cortices, while free switches additionally activated anterior frontal cortices. These findings highlight unique contributions of proactive and reactive control during visual search.
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DOI:
--
发表时间:
2018
期刊:
Attention, Perception, & Psychophysics
影响因子:
--
作者:
E. Ort;Johannes Jacobus Fahrenfort;C. Olivers
通讯作者:
C. Olivers
DOI:
10.1093/oso/9780198866282.003.0013
发表时间:
2020-11
期刊:
Neurocognitive Mechanisms
影响因子:
--
作者:
G. Piccinini
通讯作者:
G. Piccinini
影响因子:
3.7
作者:
Shulman, GL;d'Avossa, G;Corbetta, M
通讯作者:
Corbetta, M
影响因子:
3.1
作者:
Menon, Vinod;Uddin, Lucina Q.
通讯作者:
Uddin, Lucina Q.
DOI:
10.1073/pnas.240460497
发表时间:
2000-11-21
影响因子:
11.1
作者:
Sohn, MH;Ursu, S;Carter, CS
通讯作者:
Carter, CS