Event-related potential (ERP) evidence for fluency-based recognition memory

► Perceptual fluency was altered at test by changing the clarity of the test probe. ► Clarity was held constant (blocked) or varied (random) across test trials. ► Recognition was based either on fluency (blocked) or familiarity (random). ► Fluency correlated with an early ERP, 280-400 ms, at parietal electrodes. ► The evidence suggests fluency can be separated from familiarity.