An fMRI study of visual geometric shapes processing.

Cross-modal correspondence has been consistently evidenced between shapes and other sensory attributes. Especially, the curvature of shapes may arouse the affective account, which may contribute to understanding the mechanism of cross-modal integration. Hence, the current study used the functional magnetic resonance imaging (fMRI) technique to examine brain activity's specificity when people view circular and angular shapes.

Disentangling working memory from multiple-object tracking: Evidence from dual-task interferences.

Multiple object tracking (MOT) is generally regarded as a pure attention-consuming task that draws heavily on attention resources. In the present study, we adopted a cross-channel visual-audio dual-task paradigm, i.e.

Categorical encoding of moving colors during location tracking.

Categorical perception (CP) describes our tendency to perceive the visual world in a categorical manner, suggesting that high-level cognition may affect perception. While most studies are conducted in static visual scenes, Sun and colleagues found CP effects of color in multiple object tracking (MOT). This study used functional magnetic resonance imaging to investigate the neural mechanism behind the categorical effects of color in MOT.

How do humans group non-rigid objects in multiple object tracking?: Evidence from grouping by self-rotation.

Previous studies on perceptual grouping found that people can use spatiotemporal and featural information to group spatially separated rigid objects into a unit while tracking moving objects. However, few studies have tested the role of objects' self-motion information in perceptual grouping, although it is of great significance to the motion perception in the three-dimensional space. In natural environments, objects always move in translation and rotation at the same time.

Scientific Evidence of Xuebijing Injection in the Treatment of Sepsis.

Objectives: To systematically collate, appraise, and synthesize the current evidence on the Xuebijing injection (XBJI) for sepsis.

Methods: Eight databases were searched for systematic reviews (SRs) or meta-analyses (MAs) on XBJI for sepsis. Assessing the Methodological Quality of Systematic Reviews-2 (AMSTAR-2), Preferred Reporting Item for Systematic Reviews and Meta-Analyses (PRISMA), and Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) methods were used to assess the methodological quality, reporting quality, and evidence quality of the enrolled studies, respectively.

Neural Hierarchy of Color Categorization: From Prototype Encoding to Boundary Encoding.

A long-standing debate exists on how our brain assigns the fine-grained perceptual representation of color into discrete color categories. Recent functional magnetic resonance imaging (fMRI) studies have identified several regions as the candidate loci of color categorization, including the visual cortex, language-related areas, and non-language-related frontal regions, but the evidence is mixed. Distinct from most studies that emphasized the representational differences between color categories, the current study focused on the variability among members within a category (e.

The influence of mood on the effort in trying to shift one's attention from a mind wandering phase to focusing on ongoing activities in a laboratory and in daily life.

This research investigated the effect of mood on self-reported effort in trying to focus back from mind wandering to ongoing things. We conducted three studies (one correlational and two experimental studies). Study 1 served as a correlational demonstration (questionnaires) of the negative relations between focus back effort and negative mood and between mind wandering and focus back effort at the trait level.

Pleasantness of mind wandering is positively associated with focus back effort in daily life: Evidence from resting state fMRI.

Despite the dynamic property of consciousness, little research has explored the characteristic of the effort in trying to focus back, in which attention is shifted from mind wandering to ongoing activities. In the current study, we assessed the frequency of daily mind wandering, the pleasantness of daily mind wandering content, and the daily focus back effort of 69 participants, and then collected their resting-state functional magnetic resonance imaging (rsfMRI) scans. Our results revealed that (1) participants who experienced more daily pleasant mind wandering tended to have higher effort in trying to focus back than individuals with less pleasant mind wandering whereas there were no significant relations between pleasantness of mind wandering and mind wandering frequency or between focus back effort and mind wandering frequency in everyday life; (2) the pleasantness of mind wandering and focus back effort were associated with two functional connectivity that related to focus back episodes (right dorsolateral prefrontal cortex-right middle frontal gyrus, right inferior parietal - right middle frontal gyrus).

Distinguishing the neural mechanism of attentional control and working memory in feature-based attentive tracking.

Surface features are an important component in attentive tracking. However, the neural mechanisms underlying how features affect attentive tracking remain unknown. The present fMRI study addressed this issue by manipulating the intragroup feature complexity and intergroup feature similarity.

How Do Humans Perform in Multiple Object Tracking With Unstable Features.

In real-world scenarios, objects' surface features sometimes change as they move, impairing the continuity of objects. However, it is still unknown how our visual system adapts to this dynamic change. Hence, the present study investigated the role of feature changes in attentive tracking through a modified multiple object tracking (MOT) task.

Tracking within-category colors is easier: Color categories modulate location processing in a dynamic visual task.

The categorical perception (CP) of color describes the phenomenon that colors across categories (e.g., blue and green) are more discriminable than within-category colors (e.

The effects of colour complexity and similarity on multiple object tracking performance.

Surface features can be used during multiple object tracking (MOT). Previous studies suggested that surface features might be stored in visual working memory to assist object tracking, and attentive tracking and visual working memory share common attentional resources. However, it is still unknown whether features of both the target and distractor sets will be stored, or features of the target and distractor sets are processed differently.

Functional specialization for feature-based and symmetry-based groupings in multiple object tracking.

Our vision systems utilize attention to process dynamic visual information everyday. Multiple object tracking (MOT) is widely used for studying sustained attention in dynamic environments. Previous research reported inter-target grouping based on feature similarity (e.

Hue distinctiveness overrides category in determining performance in multiple object tracking.

The visual distinctiveness between targets and distractors can significantly facilitate performance in multiple object tracking (MOT), in which color is a feature that has been commonly used. However, the processing of color can be more than "visual." Color is continuous in chromaticity, while it is commonly grouped into discrete categories (e.