Autism spectrum disorder（ASD）is a neurodevelopment disorder characterized by impaired social interaction and communication along with restricted and repetitive behavior.For a long period of time,ASD was considered t...Autism spectrum disorder（ASD）is a neurodevelopment disorder characterized by impaired social interaction and communication along with restricted and repetitive behavior.For a long period of time,ASD was considered to be a rare mental disorder,with a prevalence of less than1/100,000.However,the prevalence of diagnosed ASD has increased rapidly in recent years to approximately展开更多
When presented with visual stimuli of face images,the ventral stream visual cortex of the human brain exhibits face-specific activity that is modulated by the physical properties of the input images.However,it is stil...When presented with visual stimuli of face images,the ventral stream visual cortex of the human brain exhibits face-specific activity that is modulated by the physical properties of the input images.However,it is still unclear whether this activity relates to conscious face perception.We explored this issue by using the human intracranial electroencephalography technique.Our results showed that face-specific activity in the ventral stream visual cortex was significantly higher when the subjects subjectively saw faces than when they did not,even when face stimuli were presented in both conditions.In addition,the face-specific neural activity exhibited a more reliable neural response and increased posterior-anterior direction information transfer in the“seen”condition than the“unseen”condition.Furthermore,the face-specific neural activity was significantly correlated with performance.These findings support the view that face-specific activity in the ventral stream visual cortex is linked to conscious face perception.展开更多
Faces and their aesthetic appreciation are a core element of social interaction.Although studies have been made on facial processing when looking at faces with different perspectives,a direct comparison of faces in th...Faces and their aesthetic appreciation are a core element of social interaction.Although studies have been made on facial processing when looking at faces with different perspectives,a direct comparison of faces in the left to the right perspective is missing.Portraits in classical Western art indicate a preference of the left compared to the right perspective,but the neural underpinnings of such an asymmetry still have to be clarified.Using functional magnetic resonance imaging,the current study focuses on the processing of three-quarter faces seen with different perspectives.Seventeen participants were asked to passively look at photographs of six male and six female faces with a neutral expression;the photographs were taken from the left,right,and frontal perspectives while keeping their focus on the eyes.The results showed that specific brain areas were involved in processing the three-quarter faces in either symmetric or asymmetric ways.Viewing left and right three-quarter faces resulted in two mirror-like activations in the striate cortex corresponding to the symmetric layout of the left and right perspectives.Viewing the left face resulted additionally in an enhanced activation also in the left extrastriate cortex.The right perspective of male faces elicited a lower activation compared to other perspectives in face-selective areas of the brain.Our findings suggest that the preference of the left three-quarter face emerges already in the early visual pathway presumably prior to facial identification,emotional processing,and aesthetic appreciation.Our observations may have general importance in disentangling different neural components and processing stages in the spatiotemporal characteristics of artistic expressions.展开更多
基金supported by the National Natural Science Foundation of China (31400960)
文摘Autism spectrum disorder（ASD）is a neurodevelopment disorder characterized by impaired social interaction and communication along with restricted and repetitive behavior.For a long period of time,ASD was considered to be a rare mental disorder,with a prevalence of less than1/100,000.However,the prevalence of diagnosed ASD has increased rapidly in recent years to approximately
基金supported by the Science and Technology Innovation 2030-Brain Science and Brain-Inspired Intelligence Project (2021ZD0200200)the National Natural Science Foundation of China (62327805,82151307,and 32271085)the Beijing Natural Science Foundation (5244049).
文摘When presented with visual stimuli of face images,the ventral stream visual cortex of the human brain exhibits face-specific activity that is modulated by the physical properties of the input images.However,it is still unclear whether this activity relates to conscious face perception.We explored this issue by using the human intracranial electroencephalography technique.Our results showed that face-specific activity in the ventral stream visual cortex was significantly higher when the subjects subjectively saw faces than when they did not,even when face stimuli were presented in both conditions.In addition,the face-specific neural activity exhibited a more reliable neural response and increased posterior-anterior direction information transfer in the“seen”condition than the“unseen”condition.Furthermore,the face-specific neural activity was significantly correlated with performance.These findings support the view that face-specific activity in the ventral stream visual cortex is linked to conscious face perception.
基金Hanns-Seidel FoundationNational Natural Science Foundation of China,Grant/Award Numbers:31371018,31771213Parmenides Foundation。
文摘Faces and their aesthetic appreciation are a core element of social interaction.Although studies have been made on facial processing when looking at faces with different perspectives,a direct comparison of faces in the left to the right perspective is missing.Portraits in classical Western art indicate a preference of the left compared to the right perspective,but the neural underpinnings of such an asymmetry still have to be clarified.Using functional magnetic resonance imaging,the current study focuses on the processing of three-quarter faces seen with different perspectives.Seventeen participants were asked to passively look at photographs of six male and six female faces with a neutral expression;the photographs were taken from the left,right,and frontal perspectives while keeping their focus on the eyes.The results showed that specific brain areas were involved in processing the three-quarter faces in either symmetric or asymmetric ways.Viewing left and right three-quarter faces resulted in two mirror-like activations in the striate cortex corresponding to the symmetric layout of the left and right perspectives.Viewing the left face resulted additionally in an enhanced activation also in the left extrastriate cortex.The right perspective of male faces elicited a lower activation compared to other perspectives in face-selective areas of the brain.Our findings suggest that the preference of the left three-quarter face emerges already in the early visual pathway presumably prior to facial identification,emotional processing,and aesthetic appreciation.Our observations may have general importance in disentangling different neural components and processing stages in the spatiotemporal characteristics of artistic expressions.
