TitleHigh Visual Perceptual Load Reduces Prepulse Inhibition Induced by Task-Unrelated and Task-Related Sound
AuthorsChen, Liangjie
Yang, Xiaoqin
Ge, Zhongshu
Liu, Lei
Yang, Xiaodong
Yang, Pengcheng
Li, Liang
AffiliationPeking Univ, Sch Psychol & Cognit Sci, Beijing Key Lab Behav & Mental Hlth, Beijing, Peoples R China
Peking Univ, Natl Inst Drug Dependence, Beijing, Peoples R China
Peking Univ, Beijing Key Lab Drug Dependence, Beijing, Peoples R China
Peking Univ, Speech & Hearing Res Ctr, Key Lab Machine Percept, Minist Educ, Beijing, Peoples R China
Peking Univ, Sch Psychol & Cognit Sci, 52 Haidian Rd, Beijing 100080, Peoples R China
KeywordsACOUSTIC STARTLE RESPONSE
ATTENTIONAL MODULATION
EYEBLINK MODIFICATION
MEMORY PERFORMANCE
P50 SUPPRESSION
REFLEX
CAPACITY
SCHIZOPHRENIA
INDIVIDUALS
RECOGNITION
Issue DateMar-2023
PublisherJOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE
AbstractPrepulse inhibition (PPI) is an automatic and pre-attentive sensorimotor gating process. Several studies have shown that advanced cognitive functions can modulate PPI. This study aimed to further elucidate the modulatory effect of attentional resource allocation on PPI. We examined the differences in PPI between high and low attentional loads. First, we verified that the adapted feature versus combination visual search paradigm could produce high and low perceptual load differences according to the task demands. Second, we measured the participants' task-unrelated PPI during the visual search task and found that the PPI in the high-load condition was significantly lower than that in the low-load condition. To further elucidate the role of attentional resources, we tested task-related PPI using a dual-task paradigm in which participants were instructed to complete a visual task with an auditory discrimination task. We found a result similar to that of the task-unrelated experiment. The participants in the high-load condition had less PPI than those in the low-load condition. Finally, we ruled out the possibility that the working memory load explains the modulation of PPI. In line with the theory of PPI modulation, these results suggest that allocating limited attentional resources to the prepulse modulates PPI.
URIhttp://hdl.handle.net/20.500.11897/674743
ISSN0096-1523
DOI10.1037/xhp0001085
IndexedSCI(E)
SSCI
Appears in Collections:心理与认知科学学院
行为与心理健康北京市重点实验室
医学部待认领
信息科学技术学院
机器感知与智能教育部重点实验室

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