Figure 1: Experimental Design.

The experimental paradigm common to all experiments included 5 steps. First, subjects were asked to rate all items on an eight points scale. Then they chose between similarly rated pairs of items (only half of items from Rating 1 were presented in this block). In the third block they were asked to rate all items again. In the fourth block, subjects had to choose between the second half of items. Finally, they were presented with a memory test, which assessed both their objective (forced-choice task) and subjective memory. Slight differences distinguished the purely behavioral experiments from the fMRI and SEEG experiments as detailed in the procedure (see SI). The four images displayed in this figure are free of use for commercial usage (Rio de Janeiro Corcovado mountain by Artyominc https://commons.wikimedia.org/wiki/File:Christ_on_Corcovado_mountain.JPG (CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0/deed.en); Gizah pyramids by Ricardo Liberato https://en.wikipedia.org/wiki/File:All_Gizah_Pyramids.jpg (CC BY-SA 2.0 https://creativecommons.org/licenses/by-sa/2.0/deed.en); Santiago Chile by Patrick Coe https://commons.wikimedia.org/wiki/File:Santiago_Chile.jpg (CC BY 2.0 https://creativecommons.org/licenses/by/2.0/deed.en); Greek landscape https://pixabay.com/fr/gr%C3%A8ce-mer-vue-sur-la-mer-sud-905559/ is in the public domain with no attribution required (CC0 https://creativecommons.org/publicdomain/zero/1.0/deed.fr).