Dual-format attentional template during preparation in human visual cortex

Goal-directed attention relies on forming internal templates of key information relevant for guiding behavior, particularly when preparing for upcoming sensory inputs. However, evidence on how these attentional templates is represented during preparation remains controversial. Here, we combine functional magnetic resonance imaging (fMRI) with an orientation cueing task to isolate preparatory activity from stimulus-evoked responses. Using multivariate pattern analysis, we found decodable information of the to-be-attended orientation during preparation; yet preparatory activity patterns were different from those evoked when actual orientations were perceived. When perturbing the neural activity by means of a visual impulse (‘pinging’ technique), the preparatory activity patterns in visual cortex resembled those associated with perceiving these orientations. The observed differential patterns with and without the impulse perturbation suggest a predominantly non-sensory format and a latent, sensory-like format of representation during preparation. Furthermore, the emergence of the sensory-like template coincided with enhanced information connectivity between V1 and frontoparietal areas and was associated with improved behavioral performance. This dual-format mechanism suggests that during preparation the brain encodes more detailed template information beyond its immediate use, potentially providing advantages for adaptive attentional control. Consistent with recent theories of non-veridical, ‘good-enough’ attentional template for initial guidance, our findings established a neural basis for implementing two representational formats in different functional states during preparation: a predominantly non-sensory format for guidance and a latent sensory-like format for prospective stimulus processing.