Picture memory is either a block design or acquiring data.
Either block design or event-related design.  All event-related designs are brain image acquisition. All brain image acquisition is preceded by data processing. Nothing preceded by data processing acquires data. Picture memory is either an event-related design and acquiring data or neither an event-related design nor acquiring data.
∀x (BlockDesign(x) ∨ Event-relatedDesign(x)) ∀x (Event-relatedDesign(x) → BrainImageAcquisition(x)) ∀x (BrainImageAcquisition(x) → PrecededByDataProcessing(x)) ∀x (PrecededByDataProcessing(x) → ¬AcquiringData(x)) (Event-relatedDesign(pictureMemory) ∧ AcquiringData(pictureMemory)) ∨ (¬Event-relatedDesign(pictureMemory) ∧ ¬AcquiringData(pictureMemory))