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Spatial memory and animal movement.
TLDR
This work draws together research from several disciplines to understand the relationship between animal memory and movement processes, and frames the problem in terms of the characteristics, costs and benefits of memory as outlined in psychology and neuroscience.
Learning capabilities enhanced in harsh environments: a common garden approach
TLDR
The results support the idea that environmental severity may be an important factor in shaping certain aspects of cognition.
Hippocampal neurogenesis is associated with migratory behaviour in adult but not juvenile sparrows (Zonotrichia leucophrys ssp.)
TLDR
The results suggest that migratory behaviour in adults is associated with maintained or increased neurogenesis and the differential production of new neurons may be the mechanism underpinning changes in the hippocampal architecture between adult migratory and non-migratory birds.
Behavioral Profile Predicts Dominance Status in Mountain Chickadees.
TLDR
The results contradict the idea that novel object exploration and novel room exploration are always interchangeable measures of individuals' sensitivity to environmental novelty and suggest that behavioral profile may predict the social status of group-living individuals.
Is bigger always better? A critical appraisal of the use of volumetric analysis in the study of the hippocampus
TLDR
Overall, there is strong evidence that the Hp is involved in the specialization of spatial memory in scatter-hoarding animals, but volume may be only a coarse proxy for more relevant and subtle changes in the structure of the brain underlying changes in behaviour.
Effects of captivity and memory-based experiences on the hippocampus in mountain chickadees.
TLDR
It is demonstrated that captivity reduces hippocampusal volume relative to the remainder of the telencephalon, but not at the expense of neuron numbers, and memory-based experiences in captivity may not be sufficient to maintain hippocampal volume comparable to wild-caught counterparts.
Flexible cue use in food-caching birds
TLDR
The findings argue against the hypothesis that the memory of spatial cues should always take priority over any non-spatial cues, including color cues, in food-caching species, because in the experiment mountain chickadees chose color over spatial cues.
Variation in memory and the hippocampus across populations from different climates: a common garden approach
TLDR
It is found that differences in hippocampal neuron number, neurogenesis and spatial memory previously observed in wild chickadees persisted in hand-raised birds from the same populations, even when birds were raised in an identical environment, rejecting the hypothesis that variation in these traits is owing solely to differences in memory-based experiences in different environments.
Ecologically relevant spatial memory use modulates hippocampal neurogenesis
TLDR
It is shown that ecologically relevant, spatial memory-based experiences of food caching and retrieving directly affect hippocampal neurogenesis in mountain chickadees (Poecile gambeli), and that restricting memory experiences in captivity caused significantly lower rates of Neurogenesis, as determined by doublecortin expression.
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