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We all know the disappointment when, after a wonderful snapshot, the details in the photo are at much lower contrast than seen before with our own eyes. A recent study by Rahimi-Nasrabadi et al. revealed that this is because human vision accounts for actual luminance range and for accompanied asymmetric changes in dark and light contrasts.An inherent property of extinguished fear memories is that the fear may return. A recent study in mice by Li et al. provides novel insights into the mechanisms underlying the relapse of an extinguished