Palimpsest memories stored in memristive synapses
Palimpsest memories stored in memristive synapses
Biological synapses store multiple memories on top of each other in a palimpsest fashion and at different time scales. Palimpsest consolidation is facilitated by the interaction of hidden biochemical processes governing synaptic efficacy during varying lifetimes. This arrangement allows idle memories to be temporarily overwritten without being forgotten, while previously unseen memories are used in the short term. While embedded artificial intelligence can greatly benefit from this functionality, a practical demonstration in hardware is missing. Here, we show how the intrinsic properties of metal-oxide volatile memristors emulate the processes supporting biological palimpsest consolidation. Our memristive synapses exhibit an expanded doubled capacity and protect a consolidated memory while up to hundreds of uncorrelated short-term memories temporarily overwrite it, without requiring specialized instructions. We further demonstrate this technology in the context of visual working memory. This showcases how emerging memory technologies can efficiently expand the capabilities of artificial intelligence hardware toward more generalized learning memories.
Giotis, Christos
2b14de78-3ff1-425d-ac4b-10fbf228377c
Serb, Alexander
8895cd22-f076-4bbb-8f28-f4539242b947
Manouras, Vasileios
560dba43-4b76-44e0-ba9a-25ed2bcdd953
Stathopoulos, Spyros
98d12f06-ad01-4708-be19-a97282968ee6
Prodromakis, Themis
d58c9c10-9d25-4d22-b155-06c8437acfbf
24 June 2022
Giotis, Christos
2b14de78-3ff1-425d-ac4b-10fbf228377c
Serb, Alexander
8895cd22-f076-4bbb-8f28-f4539242b947
Manouras, Vasileios
560dba43-4b76-44e0-ba9a-25ed2bcdd953
Stathopoulos, Spyros
98d12f06-ad01-4708-be19-a97282968ee6
Prodromakis, Themis
d58c9c10-9d25-4d22-b155-06c8437acfbf
Giotis, Christos, Serb, Alexander, Manouras, Vasileios, Stathopoulos, Spyros and Prodromakis, Themis
(2022)
Palimpsest memories stored in memristive synapses.
Science Advances, 8 (25), [eabn7920].
(doi:10.1126/sciadv.abn7920).
Abstract
Biological synapses store multiple memories on top of each other in a palimpsest fashion and at different time scales. Palimpsest consolidation is facilitated by the interaction of hidden biochemical processes governing synaptic efficacy during varying lifetimes. This arrangement allows idle memories to be temporarily overwritten without being forgotten, while previously unseen memories are used in the short term. While embedded artificial intelligence can greatly benefit from this functionality, a practical demonstration in hardware is missing. Here, we show how the intrinsic properties of metal-oxide volatile memristors emulate the processes supporting biological palimpsest consolidation. Our memristive synapses exhibit an expanded doubled capacity and protect a consolidated memory while up to hundreds of uncorrelated short-term memories temporarily overwrite it, without requiring specialized instructions. We further demonstrate this technology in the context of visual working memory. This showcases how emerging memory technologies can efficiently expand the capabilities of artificial intelligence hardware toward more generalized learning memories.
Text
sciadv.abn7920
- Version of Record
More information
Published date: 24 June 2022
Identifiers
Local EPrints ID: 476664
URI: http://eprints.soton.ac.uk/id/eprint/476664
ISSN: 2375-2548
PURE UUID: ee2902be-2ea3-4e03-a720-a8fc8b72220f
Catalogue record
Date deposited: 10 May 2023 17:21
Last modified: 17 Mar 2024 01:44
Export record
Altmetrics
Contributors
Author:
Christos Giotis
Author:
Alexander Serb
Author:
Vasileios Manouras
Author:
Spyros Stathopoulos
Author:
Themis Prodromakis
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics