Facial expressions in infants have been noted to create a spatial attention bias when compared with adult faces.Yet,there is limited understanding of how adults perceive the timing of infant facial expressions.To inve...Facial expressions in infants have been noted to create a spatial attention bias when compared with adult faces.Yet,there is limited understanding of how adults perceive the timing of infant facial expressions.To investigate this,we used both infant and adult facial expressions in a temporal bisection task.In Experiment 1,we compared duration judgments of neutral infant and adult faces.The results revealed that participants felt that neutral infant faces lasted for a shorter time than neutral adult faces,independent of participant sex.Experiment 2 employed sad(crying)facial expressions.Here,the female participants perceived that the infants'faces were displayed for a longer duration than the adults'faces,whereas this distinction was not evident among the male participants.These findings highlight the influence of the babyface schema on time perception,nuanced by emotional context and sex-based individual variances.展开更多
Duration perception can be heavily distorted owing to repetitive exposure to a relatively long or short sensory event,often causing a duration aftereffect.Here,we used a novel procedure to show that adaptations to bot...Duration perception can be heavily distorted owing to repetitive exposure to a relatively long or short sensory event,often causing a duration aftereffect.Here,we used a novel procedure to show that adaptations to both single and average durations produced the duration aftereffect.Participants completed a duration reproduction task(Experiment 1)or a duration category rating task(Experiment 2)after long-term adaptations to a stimulus of medium duration and to stimuli of averagely medium duration.We found that adaptations to both single and average durations resulted in duration aftereffects.The simultaneously recorded functional magnetic resonance imaging(fMRI)data revealed that the reduction in neural activity due to long-term adaptation to single duration was observed in the right supramarginal gyrus(SMG)of the parietal lobe,while adaptation to average duration resulted in fMRI adaptations in the left postcentral gyrus(PCG)and middle cingulate gyrus(MCG).At the individual level,the magnitude of the behavioral aftereffect was positively correlated with the magnitude of fMRI adaptation in the right SMG after adaptation to single duration,while there were no significantly positive correlations between the behavioral aftereffect and fMRI adaptations in the left PCG and MCG.These results suggest that there are different neural mechanisms for aftereffects caused by adaptations to single and average durations.展开更多
Subjective time dilation is an effect discovered using the oddball paradigm,where expanding visual stimuli,but not shrinking ones,induce a prolongation of subjective temporal perception compared to static stimuli.This...Subjective time dilation is an effect discovered using the oddball paradigm,where expanding visual stimuli,but not shrinking ones,induce a prolongation of subjective temporal perception compared to static stimuli.This disparity is often seen as another demonstration of humans’evolved reaction to approaching threats,since visual expansion resembles approaching potential threats and warrants extra attention.In this study,we show that by manipulating the relative sizes of stimuli,both expanding and shrinking stimuli can induce prolongation of subjective time in an oddball paradigm.We propose an alternative explanation based on information theory,linking subjective temporal perception to entropy,an objective property of stimulus that is information uncertainty.Temporal function as a logistic function thus serves as the framework inside which content functions like information processing are able to operate coherently.展开更多
The study investigates whether participants can establish multiple temporal references in a temporal reproduction task.The results show that participants can learn and maintain two references for the overlapping inter...The study investigates whether participants can establish multiple temporal references in a temporal reproduction task.The results show that participants can learn and maintain two references for the overlapping intervals with the short distribution being overestimated towards the long one.展开更多
基金Natural Science Foundation of Jiangsu Province(Jiangsu Provincial Department of Science andTechnology,China),Grant/Award Number:BK20191485。
文摘Facial expressions in infants have been noted to create a spatial attention bias when compared with adult faces.Yet,there is limited understanding of how adults perceive the timing of infant facial expressions.To investigate this,we used both infant and adult facial expressions in a temporal bisection task.In Experiment 1,we compared duration judgments of neutral infant and adult faces.The results revealed that participants felt that neutral infant faces lasted for a shorter time than neutral adult faces,independent of participant sex.Experiment 2 employed sad(crying)facial expressions.Here,the female participants perceived that the infants'faces were displayed for a longer duration than the adults'faces,whereas this distinction was not evident among the male participants.These findings highlight the influence of the babyface schema on time perception,nuanced by emotional context and sex-based individual variances.
基金National Natural Science Foundation of China,Grant/Award Number:32000744。
文摘Duration perception can be heavily distorted owing to repetitive exposure to a relatively long or short sensory event,often causing a duration aftereffect.Here,we used a novel procedure to show that adaptations to both single and average durations produced the duration aftereffect.Participants completed a duration reproduction task(Experiment 1)or a duration category rating task(Experiment 2)after long-term adaptations to a stimulus of medium duration and to stimuli of averagely medium duration.We found that adaptations to both single and average durations resulted in duration aftereffects.The simultaneously recorded functional magnetic resonance imaging(fMRI)data revealed that the reduction in neural activity due to long-term adaptation to single duration was observed in the right supramarginal gyrus(SMG)of the parietal lobe,while adaptation to average duration resulted in fMRI adaptations in the left postcentral gyrus(PCG)and middle cingulate gyrus(MCG).At the individual level,the magnitude of the behavioral aftereffect was positively correlated with the magnitude of fMRI adaptation in the right SMG after adaptation to single duration,while there were no significantly positive correlations between the behavioral aftereffect and fMRI adaptations in the left PCG and MCG.These results suggest that there are different neural mechanisms for aftereffects caused by adaptations to single and average durations.
基金National Natural Science Foundation of China,Grant/Award Numbers:31371018,31771213。
文摘Subjective time dilation is an effect discovered using the oddball paradigm,where expanding visual stimuli,but not shrinking ones,induce a prolongation of subjective temporal perception compared to static stimuli.This disparity is often seen as another demonstration of humans’evolved reaction to approaching threats,since visual expansion resembles approaching potential threats and warrants extra attention.In this study,we show that by manipulating the relative sizes of stimuli,both expanding and shrinking stimuli can induce prolongation of subjective time in an oddball paradigm.We propose an alternative explanation based on information theory,linking subjective temporal perception to entropy,an objective property of stimulus that is information uncertainty.Temporal function as a logistic function thus serves as the framework inside which content functions like information processing are able to operate coherently.
基金National Natural Science Foundation of China,Grant/Award Number:31771213。
文摘The study investigates whether participants can establish multiple temporal references in a temporal reproduction task.The results show that participants can learn and maintain two references for the overlapping intervals with the short distribution being overestimated towards the long one.
