Details

Autor(en) / Beteiligte

• Merkow, Maxwell B.
• Burke, John F.
• Kahana, Michael J.

Titel

The human hippocampus contributes to both the recollection and familiarity components of recognition memory

Ist Teil von

• Proceedings of the National Academy of Sciences - PNAS, 2015-11, Vol.112 (46), p.14378-14383

Ort / Verlag

United States: National Academy of Sciences

Erscheinungsjahr

2015

Quelle

MEDLINE

Beschreibungen/Notizen

• Despite a substantial body of work comprising theoretical modeling, the effects of medial temporal lobe lesions, and electrophysiological signal analysis, the role of the hippocampus in recognition memory remains controversial. In particular, it is not known whether the hippocampus exclusively supports recollection or both recollection and familiarity—the two latent cognitive processes theorized to underlie recognition memory. We studied recognition memory in a large group of patients undergoing intracranial electroencephalographic (iEEG) monitoring for epilepsy. By measuring high-frequency activity (HFA)—a signal associated with precise spatiotemporal properties—we show that hippocampal activity during recognition predicted recognition memory performance and tracked both recollection and familiarity. Through the lens of dual-process models, these results indicate that the hippocampus supports both the recollection and familiarity processes.