13 results on '"Jiaofeng Li"'
Search Results
2. Evidence for the beneficial effect of perceptual grouping on visual working memory: an empirical study on illusory contour and a meta-analytic study
- Author
-
Jiaofeng Li, Jiehui Qian, and Fan Liang
- Subjects
Illusory Contours ,Visual Working Memory (VWM) ,Perceptual Grouping ,Display Memory ,Grouping Relevant Feature ,Medicine ,Science - Abstract
Abstract The capacity of visual working memory (VWM) is found to be extremely limited. Past research shows that VWM can be facilitated by Gestalt principles of grouping, however, it remains controversial whether factors like the type of Gestalt principles, the characteristics of stimuli and the nature of experimental design could affect the beneficial effect of grouping. In particular, studies have shown that perceptual grouping could improve memory performance for a feature that is relevant for grouping, but it is unclear whether the same improvement exists for a feature that is irrelevant for grouping. In this article, an empirical study and a meta-analytic study were conducted to investigate the effect of perceptual grouping on VWM. In the empirical study, we examined the grouping effect by employing a Kanizsa illusion in which memory items were grouped by illusory contour. We found that the memory performance was improved for the grouped items even though the tested feature was grouping irrelevant, and the improvement was not significantly different from the effect of grouping by physical connectedness or by solid occlusion. In the meta-analytic study, we systematically and quantitatively examined the effect of perceptual grouping on VWM by pulling the results from all eligible studies, and found that the beneficial grouping effect was robust but the magnitude of the effect can be affected by several moderators. Factors like the types of grouping methods, the duration and the layout of the memory display, and the characteristics of the tested feature moderated the grouping effect, whereas whether employing a cue or a verbal suppression task did not. Our study suggests that the underlying mechanism of the grouping benefit may be distinct with regard to grouping relevancy of the to-be-stored feature. The grouping effect on VWM may be independent of attention for a grouping relevant feature, but may rely on attentional prioritization for a grouping irrelevant feature.
- Published
- 2018
- Full Text
- View/download PDF
3. Evidence for the effect of depth on visual working memory
- Author
-
Jiehui Qian, Jiaofeng Li, Kaiyue Wang, Shengxi Liu, and Quan Lei
- Subjects
Medicine ,Science - Abstract
Abstract Visual working memory (VWM) is a cognitive memory buffer for temporarily holding, processing, and manipulating visual information. Previous studies have demonstrated mixed results of the effect of depth perception on VWM, with some showing a beneficial effect while others not. In this study, we employed an adapted change detection paradigm to investigate the effects of two depth cues, binocular disparity and relative size. The memory array consisted of a set of pseudo-randomly positioned colored items, and the task was to judge whether the test item was changed compared to the memory item after a retention interval. We found that presenting the items in stereoscopic depth alone hardly affected VWM performance. When combining the two coherent depth cues, a significant larger VWM capacity of the perceptually closer-in-depth items was observed than that of the farther items, but the capacity for the two-depth-planes condition was not significantly different from that for the one-plane condition. Conflicting the two depth cues resulted in cancelling the beneficial effect of presenting items at a closer depth plane. The results indicate that depth perception could affect VWM, and the visual system may have an advantage in maintaining closer-in-depth objects in working memory.
- Published
- 2017
- Full Text
- View/download PDF
4. Event Cache: An Independent Component in Working Memory
- Author
-
Hui Zhou, Jinglan Wu, Jiaofeng Li, Zhihe Pan, Jinying Lu, Mowei Shen, Teng-Fei Wang, Yuzheng Hu, and Zaifeng Gao
- Abstract
Working memory (WM) has been a major focus of cognitive science and neuroscience for the past 50 years. While most WM research has centered on the mechanisms of objects, there has been a lack of investigation into the cognitive and neural mechanisms of events, which are the building blocks of our experience. Employing confirmatory factor analysis and resting-state and task fMRI, our study demonstrated for the first time that events have an independent storage space within WM, known as the event cache, with distinct neural correlates compared to object storage in WM. The cerebellar network was found to be the most essential network for event cache, with the left cerebellum Crus I being particularly involved in encoding and maintaining events. Our findings shed critical light on the neuropsychological mechanism of WM by revealing event cache as an independent sub-component of WM and encourage the reconsideration of theoretical models for WM.
- Published
- 2023
5. Linking chromatin acylation mark-defined proteome and genome in living cells
- Author
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Fangfei Qin, Boyuan Li, Hui Wang, Sihui Ma, Jiaofeng Li, Shanglin Liu, Linghao Kong, Huangtao Zheng, Rongfeng Zhu, Yu Han, Mingdong Yang, Kai Li, Xiong Ji, and Peng R. Chen
- Subjects
General Biochemistry, Genetics and Molecular Biology - Published
- 2023
6. A domain-general frontoparietal network interacts with domain-preferential intermediate pathways to support working memory task
- Author
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Hui Zhou, Conghui Su, Jinglan Wu, Jiaofeng Li, Xiqian Lu, Liangyu Gong, Fengji Geng, Zaifeng Gao, and Yuzheng Hu
- Subjects
Cellular and Molecular Neuroscience ,Cognitive Neuroscience - Abstract
Working memory (WM) is essential for cognition, but the underlying neural mechanisms remain elusive. From a hierarchical processing perspective, this paper proposed and tested a hypothesis that a domain-general network at the top of the WM hierarchy can interact with distinct domain-preferential intermediate circuits to support WM. Employing a novel N-back task, we first identified the posterior superior temporal gyrus (pSTG), middle temporal area (MT), and postcentral gyrus (PoCG) as intermediate regions for biological motion and shape motion processing, respectively. Using further psychophysiological interaction analyses, we delineated a frontal–parietal network (FPN) as the domain-general network. These results were further verified and extended by a delayed match to sample (DMS) task. Although the WM load-dependent and stimulus-free activations during the DMS delay phase confirm the role of FPN as a domain-general network to maintain information, the stimulus-dependent activations within this network during the DMS encoding phase suggest its involvement in the final stage of the hierarchical processing chains. In contrast, the load-dependent activations of intermediate regions in the N-back task highlight their further roles beyond perception in WM tasks. These results provide empirical evidence for a hierarchical processing model of WM and may have significant implications for WM training.
- Published
- 2022
7. The Event Buffer: A New Storage Buffer of Working Memory
- Author
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Jinglan Wu, Jiaofeng Li, Zhihe Pan, Jinying Lu, Hui Zhou, Yuzheng Hu, Tengfei Wang, and Zaifeng Gao
- Subjects
Ophthalmology ,Sensory Systems - Published
- 2022
8. Genetically encoded formaldehyde sensors inspired by a protein intra-helical crosslinking reaction
- Author
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Gong Zhang, Peng Chen, Yulong Li, Yu Han, Miao Jing, Jiaofeng Li, Jingyi Zhao, and Rongfeng Zhu
- Subjects
0301 basic medicine ,Conformational change ,Protein Conformation ,Science ,General Physics and Astronomy ,Biosensing Techniques ,Bacillus subtilis ,010402 general chemistry ,medicine.disease_cause ,01 natural sciences ,General Biochemistry, Genetics and Molecular Biology ,Mice ,03 medical and health sciences ,Protein structure ,Bacterial Proteins ,Formaldehyde ,medicine ,Animals ,Humans ,Cysteine ,Transcription factor ,Sensors and probes ,Carcinogen ,Multidisciplinary ,biology ,Toxin ,Chemistry ,Lysine ,Comment ,Brain ,Reproducibility of Results ,General Chemistry ,biology.organism_classification ,0104 chemical sciences ,Cell biology ,Cross-Linking Reagents ,Mechanisms of disease ,030104 developmental biology ,Helix ,Transcription Factors ,Macromolecule - Abstract
Formaldehyde (FA) has long been considered as a toxin and carcinogen due to its damaging effects to biological macromolecules, but its beneficial roles have been increasingly appreciated lately. Real-time monitoring of this reactive molecule in living systems is highly desired in order to decipher its physiological and/or pathological functions, but a genetically encoded FA sensor is currently lacking. We herein adopt a structure-based study of the underlying mechanism of the FA-responsive transcription factor HxlR from Bacillus subtilis, which shows that HxlR recognizes FA through an intra-helical cysteine-lysine crosslinking reaction at its N-terminal helix α1, leading to conformational change and transcriptional activation. By leveraging this FA-induced intra-helical crosslinking and gain-of-function reorganization, we develop the genetically encoded, reaction-based FA sensor—FAsor, allowing spatial-temporal visualization of FA in mammalian cells and mouse brain tissues.
- Published
- 2021
9. Object-based attention in retaining binding in working memory: Influence of activation states of working memory
- Author
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Fan Wu, Mowei Shen, Jiaofeng Li, Zaifeng Gao, Kaifeng He, and Xueyi Wan
- Subjects
Working memory ,05 social sciences ,Experimental and Cognitive Psychology ,Stimulus (physiology) ,050105 experimental psychology ,Mental rotation ,03 medical and health sciences ,0302 clinical medicine ,Neuropsychology and Physiological Psychology ,Memory, Short-Term ,Arts and Humanities (miscellaneous) ,Visual Perception ,Maintenance phase ,Humans ,0501 psychology and cognitive sciences ,Attention ,Psychology ,030217 neurology & neurosurgery ,Object-based attention ,Cognitive psychology - Abstract
It has been suggested that retaining bindings in working memory (WM) requires more object-based attention than retaining constituent features. Recent studies have found that when memorized stimuli are presented sequentially, the most recent stimulus is in a highly accessible privileged state such that it is retained in a relatively automatic and resource-free manner, whereas the other stimuli are in a non-privileged state. The current study investigated whether the activation states of WM modulate the role of object-based attention in retaining bindings in WM. To address this question, we presented three colored shapes sequentially and added a transparent-motion task (Experiment 1) or a mental rotation task (Experiment 2) into the WM maintenance phase to consume object-based attention. We consistently found that consuming object-based attention led to a larger impairment to bindings relative to constituent features, which is independent of the WM activation states, suggesting that object-based attention is critical in retaining bindings in WM across activation states of WM.
- Published
- 2020
10. Evidence for the beneficial effect of perceptual grouping on visual working memory: an empirical study on illusory contour and a meta-analytic study
- Author
-
Jiehui Qian, Fan Liang, and Jiaofeng Li
- Subjects
Male ,Perceptual Grouping ,Social connectedness ,media_common.quotation_subject ,Illusory Contours ,Science ,Illusion ,Affect (psychology) ,Article ,050105 experimental psychology ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Empirical research ,Perception ,Humans ,0501 psychology and cognitive sciences ,Visual Working Memory (VWM) ,media_common ,Multidisciplinary ,Working memory ,05 social sciences ,Illusions ,Memory, Short-Term ,Display Memory ,Feature (computer vision) ,Grouping Relevant Feature ,Visual Perception ,Gestalt psychology ,Medicine ,Female ,Psychology ,030217 neurology & neurosurgery ,Cognitive psychology - Abstract
The capacity of visual working memory (VWM) is found to be extremely limited. Past research shows that VWM can be facilitated by Gestalt principles of grouping, however, it remains controversial whether factors like the type of Gestalt principles, the characteristics of stimuli and the nature of experimental design could affect the beneficial effect of grouping. In particular, studies have shown that perceptual grouping could improve memory performance for a feature that is relevant for grouping, but it is unclear whether the same improvement exists for a feature that is irrelevant for grouping. In this article, an empirical study and a meta-analytic study were conducted to investigate the effect of perceptual grouping on VWM. In the empirical study, we examined the grouping effect by employing a Kanizsa illusion in which memory items were grouped by illusory contour. We found that the memory performance was improved for the grouped items even though the tested feature was grouping irrelevant, and the improvement was not significantly different from the effect of grouping by physical connectedness or by solid occlusion. In the meta-analytic study, we systematically and quantitatively examined the effect of perceptual grouping on VWM by pulling the results from all eligible studies, and found that the beneficial grouping effect was robust but the magnitude of the effect can be affected by several moderators. Factors like the types of grouping methods, the duration and the layout of the memory display, and the characteristics of the tested feature moderated the grouping effect, whereas whether employing a cue or a verbal suppression task did not. Our study suggests that the underlying mechanism of the grouping benefit may be distinct with regard to grouping relevancy of the to-be-stored feature. The grouping effect on VWM may be independent of attention for a grouping relevant feature, but may rely on attentional prioritization for a grouping irrelevant feature.
- Published
- 2018
11. Involuntary and voluntary processes compete for entering focus of attention of working memory
- Author
-
Huayu Liao, Mowei Shen, Zaifeng Gao, and Jiaofeng Li
- Subjects
Ophthalmology ,Focus (computing) ,business.industry ,Working memory ,Public relations ,business ,Psychology ,Sensory Systems - Published
- 2021
12. Evidence for the effect of depth on visual working memory
- Author
-
Jiaofeng Li, Jiehui Qian, Quan Lei, Kaiyue Wang, and Shengxi Liu
- Subjects
Adult ,Memory buffer register ,Visual perception ,Science ,Affect (psychology) ,050105 experimental psychology ,Article ,03 medical and health sciences ,0302 clinical medicine ,Humans ,0501 psychology and cognitive sciences ,Computer vision ,Set (psychology) ,Multidisciplinary ,business.industry ,Working memory ,05 social sciences ,Cognition ,Nontherapeutic Human Experimentation ,Memory, Short-Term ,Visual Perception ,Medicine ,Binocular disparity ,Artificial intelligence ,business ,Depth perception ,Psychology ,030217 neurology & neurosurgery ,Photic Stimulation ,Cognitive psychology - Abstract
Visual working memory (VWM) is a cognitive memory buffer for temporarily holding, processing, and manipulating visual information. Previous studies have demonstrated mixed results of the effect of depth perception on VWM, with some showing a beneficial effect while others not. In this study, we employed an adapted change detection paradigm to investigate the effects of two depth cues, binocular disparity and relative size. The memory array consisted of a set of pseudo-randomly positioned colored items, and the task was to judge whether the test item was changed compared to the memory item after a retention interval. We found that presenting the items in stereoscopic depth alone hardly affected VWM performance. When combining the two coherent depth cues, a significant larger VWM capacity of the perceptually closer-in-depth items was observed than that of the farther items, but the capacity for the two-depth-planes condition was not significantly different from that for the one-plane condition. Conflicting the two depth cues resulted in cancelling the beneficial effect of presenting items at a closer depth plane. The results indicate that depth perception could affect VWM, and the visual system may have an advantage in maintaining closer-in-depth objects in working memory.
- Published
- 2017
13. Investigations on the loss mechanisms and the loss kinetics of molybdenum trioxide on alumina and silica
- Author
-
Dazhuang, Liu, primary, Lixiong, Zhang, additional, Biguang, Yang, additional, and Jiaofeng, Li, additional
- Published
- 1993
- Full Text
- View/download PDF
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