Unmasking the contribution of low-level features to the guidance of attention.
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Unmasking the contribution of low-level features to the guidance of attention. / Ossandón, José P; Onat, Selim; Cazzoli, Dario; Nyffeler, Thomas; Müri, Rene; König, Peter.
In: NEUROPSYCHOLOGIA, Vol. 50, No. 14, 14, 2012, p. 3478-3487.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Unmasking the contribution of low-level features to the guidance of attention.
AU - Ossandón, José P
AU - Onat, Selim
AU - Cazzoli, Dario
AU - Nyffeler, Thomas
AU - Müri, Rene
AU - König, Peter
PY - 2012
Y1 - 2012
N2 - The role of low-level stimulus-driven control in the guidance of overt visual attention has been difficult to establish because low- and high-level visual content are spatially correlated within natural visual stimuli. Here we show that impairment of parietal cortical areas, either permanently by a lesion or reversibly by repetitive transcranial magnetic stimulation (rTMS), leads to fixation of locations with higher values of low-level features as compared to control subjects or in a no-rTMS condition. Moreover, this unmasking of stimulus-driven control crucially depends on the intrahemispheric balance between top-down and bottom-up cortical areas. This result suggests that although in normal behavior high-level features might exert a strong influence, low-level features do contribute to guide visual selection during the exploration of complex natural stimuli.
AB - The role of low-level stimulus-driven control in the guidance of overt visual attention has been difficult to establish because low- and high-level visual content are spatially correlated within natural visual stimuli. Here we show that impairment of parietal cortical areas, either permanently by a lesion or reversibly by repetitive transcranial magnetic stimulation (rTMS), leads to fixation of locations with higher values of low-level features as compared to control subjects or in a no-rTMS condition. Moreover, this unmasking of stimulus-driven control crucially depends on the intrahemispheric balance between top-down and bottom-up cortical areas. This result suggests that although in normal behavior high-level features might exert a strong influence, low-level features do contribute to guide visual selection during the exploration of complex natural stimuli.
KW - Adult
KW - Humans
KW - Male
KW - Aged
KW - Female
KW - Middle Aged
KW - Young Adult
KW - Transcranial Magnetic Stimulation
KW - Functional Laterality
KW - Reaction Time
KW - Attention/physiology
KW - Space Perception/physiology
KW - Photic Stimulation/methods
KW - Pattern Recognition, Visual/physiology
KW - Eye Movements
KW - Perceptual Disorders/physiopathology/psychology
KW - Perceptual Masking/physiology
KW - Adult
KW - Humans
KW - Male
KW - Aged
KW - Female
KW - Middle Aged
KW - Young Adult
KW - Transcranial Magnetic Stimulation
KW - Functional Laterality
KW - Reaction Time
KW - Attention/physiology
KW - Space Perception/physiology
KW - Photic Stimulation/methods
KW - Pattern Recognition, Visual/physiology
KW - Eye Movements
KW - Perceptual Disorders/physiopathology/psychology
KW - Perceptual Masking/physiology
M3 - SCORING: Journal article
VL - 50
SP - 3478
EP - 3487
JO - NEUROPSYCHOLOGIA
JF - NEUROPSYCHOLOGIA
SN - 0028-3932
IS - 14
M1 - 14
ER -
