视觉物体表征加工中背-腹通路的相互作用OACHSSCD

The visual system processes object information through the dorsal and ventral pathways.The ventral pathway is primarily responsible for the"what"of object recognition,whereas the dorsal pathway mainly specializes in the"where",dealing with visuospatial and motion processing.However,extensive reciprocal neural connections between these two pathways suggest significant functional interactions in visual object representation.On one hand,the ventral pathway cannot independently compute an object's global shape.The integration of global shape information,represented by the dorsal pathway,with local feature information,processed by the ventral pathway,is necessary to support invariant object recognition.On the other hand,during goal-directed thought and behavior,the dorsal pathway must dynamically extract and maintain object information from the ventral pathway to facilitate adaptive visual processing.The former constitutes a primarily feature-driven(bottom-up)functional integration,while the latter represents a predominantly task-driven(top-down)functional integration.Future research should further explore several key issues:the influence of attention on the dorsal pathway's representation of global shape;the mechanisms by which object familiarity modulates the integration of global shape and local features;how visual working memory resists interference to maintain the processing of goal-relevant stimuli;the impact of endogenous memory on adaptive object representation;and the developmental trajectories of the dorsal and ventral pathways and their implications for their functional interactions.