Cited by 10Human-Animal Interaction StudiesMemory Processes and InfluencesMemory and Neural Mechanisms

Aging-related episodic-like memory decline in dogs

Open access
Sanches, Felipe Jacques, de Melo, Jéssica Cardia, Ferreira, Sabrina Palha, Trinca, Luzia Aparecida, Arambula, Omar Gurrola, Padovani, Flavia Helena Pereira, Schelp, Arthur Oscar, Amorim, Rogério Martins·2022·Behavioural Brain Research

Abstract

Episodic memory, in humans, is the memory most affected by age-related deterioration or the constitution of neurodegenerative pathologies, such as Alzheimer's disease. However, it is unknown whether this relationship is also present in nonhuman animals. Since studies in birds, rats, primates, and dogs have been shown to have episodic-like memory, more studies aiming to improve the present understanding of this relationship in nonhuman animals are important to aid the development of new translational models for neurodegenerative disorders. Knowing that dogs (Canis familiaris) represent a promising experimental model for neurodegenerative disorders, a memory retrieval test was conducted with 90 clinically healthy domestic dogs of different ages, both sexes, and distinct breeds, for the purpose of evaluating episodic-like memory. The present study adapted a test that corroborates episodic memory requirements through incidental codification of experienced events. We performed a test with two exposure phases, with different characteristics between them, so that in the third phase it was necessary to integrate previous experiences in order to achieve success in the test. In our study, it was possible to verify the decline of episodic memory in elderly dogs, even clinically healthy, regardless of the dogs' sex and size. This episodic-like memory decline observed in elderly dogs may be related to the physiological process of aging or preclinical pathological manifestation of cognitive impairment, similar as reported in humans. More studies should be carried out evaluating episodic-like memory in dogs with suspected of canine cognitive dysfunction syndrome in order to better understand the physiological and pathological behavior of this type of memory in canine species.

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Crossref · 10.1016/j.bbr.2022.113762

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  • Older dogs and apes show lower performances in an incidental encoding and what-where-when test, respectively, compared with younger conspecifics.

    “Furthermore, older dogs and apes who were otherwise healthy showed lower performances in an incidental encoding and what–where–when test, respectively, compared with younger conspecifics [75,146].”

    From Is episodic-like memory <i>like</i> episodic memory? (2024) · cites this paper as [146]

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Authors
Sanches, F. J., de Melo, J. C., Ferreira, S. P., Trinca, L. A., Arambula, O. G., Padovani, F. H. P., Schelp, A. O., & Amorim, R. M.
Affiliations
Universidade Estadual Paulista (Unesp) (BR)
Corresponding author
Amorim, Rogério Martins
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2022-03
Volume
422
Pages
113762
ISSN
0166-4328 (ISSN-L)
OpenAlex
W4206993327
Cited by
10
References
57
Citations by year
2026: 2 · 2025: 3 · 2024: 1 · 2023: 3 · 2022: 1
FWCI
1.21
Type
journal article
Language
en
Open access
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
Funders
CAPES
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Human-Animal Interaction Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
episodic-like memory, memory decline, aging, dogs, canine cognitive dysfunction, neurodegenerative diseases, translational animal model, cognitive impairment
MeSH terms
Age Factors, Aging, Animals, Behavior, Animal, Dogs, Female, Male, Memory Disorders, Cognitive Dysfunction, Memory, Episodic

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