Age affects pigeons’ (Columba livia) memory capacity but not representation of serial order during a locomotor sequential-learning task
| Autor: | Parisa Sepehri, Christina Meier, Debbie M. Kelly |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Male
Aging Reinforcement Schedule Science behavioral disciplines and activities Article 050105 experimental psychology Learning and memory Task (project management) 03 medical and health sciences 0302 clinical medicine Age groups Memory Psychology Animals 0501 psychology and cognitive sciences Columbidae Memory test Reinforcement Multidisciplinary Cognitive ageing 05 social sciences Cognition Animal behaviour Test (assessment) Medicine Female Sequence learning Locomotion Psychomotor Performance 030217 neurology & neurosurgery psychological phenomena and processes Cognitive psychology |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | Aging affects individuals of every species, with sometimes detrimental effects on memory and cognition. The simultaneous-chaining task, a sequential-learning task, requires subjects to select items in a predetermined sequence, putting demands on memory and cognitive processing capacity. It is thus a useful tool to investigate age-related differences in these domains. Pigeons of three age groups (young, adult and aged) completed a locomotor adaptation of the task, learning a list of four items. Training began by presenting only the first item; additional items were added, one at a time, once previous items were reliably selected in their correct order. Although memory capacity declined noticeably with age, not all aged pigeons showed impairments compared to younger pigeons, suggesting that inter-individual variability emerged with age. During a subsequent free-recall memory test in the absence of reinforcement, when all trained items were presented alongside novel distractor items, most pigeons did not reproduce the trained sequence. During a further forced-choice test, when pigeons were given a choice between only two of the trained items, all three age groups showed evidence of an understanding of the ordinal relationship between items by choosing the earlier item, indicating that complex cognitive processing, unlike memory capacity, remained unaffected by age. |
| Databáze: | OpenAIRE |
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