Abstract:
:We investigated whether positive daily peer-interactions counteract the effects of isolation in Octodon degus. Twenty-five-day-old degus were either isolated (ISO), socially housed (SOCIAL), or isolated and allowed 1-hr daily peer interaction (PARTIAL-ISO). The animals were observed over 4 weeks. Just prior to isolation and after 2 weeks of individual housing, the subjects were assessed for response to pleasant stimuli via a sucrose preference test and to fearful situations in open field and startle tests. Two weeks after the previous tests, the subjects were retested as above and observed in novelty and sociability tests. Only the ISO group showed significant alterations in sensitivity to reward and increased risk-taking behavior in fearful situations. The ISO group consumed more sucrose, spent less time freezing in the startle test and exhibited increased exploration in open field and novelty tests compared to PARTIAL-ISO and SOCIAL groups. In the sociability test, the SOCIAL group vocalized more than the other two groups during encounters with an unfamiliar degus. Our findings suggest that (i) chronic isolation induces alteration of hedonic, emotional and social profiles, with a maturational delay in fear-related responses; (ii) friendly interaction attenuates most behavioral changes induced by total social isolation. However, the positive effects of daily social interactions did not fully counteract deficits in social vocalizations. Our study represents one of the few available studies focused not only on the consequences of negative life events in this species, but also the protective role of relatively short periods of positive social activity on subsequent emotional development. © 2010 Wiley Periodicals, Inc. Dev Psychobiol 53:280-290, 2011.
journal_name
Dev Psychobioljournal_title
Developmental psychobiologyauthors
Colonnello V,Iacobucci P,Anderson MP,Panksepp Jdoi
10.1002/dev.20520subject
Has Abstractpub_date
2011-04-01 00:00:00pages
280-90issue
3eissn
0012-1630issn
1098-2302journal_volume
53pub_type
杂志文章abstract::Norway rats were reared either in a standard laboratory cage or in a nest constructed by the dam from newspaper strips. Growth, thermoregulatory ability, and adrenal, gonad, adipose tissue, and brain weights were measured at weaning on Day 21 postpartum. While there was no difference in growth, nest-reared animals had...
journal_title:Developmental psychobiology
pub_type: 杂志文章
doi:10.1002/dev.420180406
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abstract::In this review, we consider the literature on sensitive periods for language acquisition from the perspective of the stroke recovery literature treated in this Special Issue. Conceptually, the two areas of study are linked in a number of ways. For example, the fact that learning itself can set the stage for future fai...
journal_title:Developmental psychobiology
pub_type: 杂志文章,评审
doi:10.1002/dev.20626
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journal_title:Developmental psychobiology
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journal_title:Developmental psychobiology
pub_type: 杂志文章
doi:10.1002/dev.20566
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journal_title:Developmental psychobiology
pub_type: 杂志文章
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abstract::The Bar Harbor obese-hyperglycemic mouse (ob/ob) characteristically develops its obese phenotype during the postweaning period, when access to food is unrestricted and its behavioral phenotype of hyperphagia appears. In the present study suckling behavior (viz., nipple attachment latencies and total suckling time) of ...
journal_title:Developmental psychobiology
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journal_title:Developmental psychobiology
pub_type: 杂志文章
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journal_title:Developmental psychobiology
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journal_title:Developmental psychobiology
pub_type: 杂志文章
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journal_title:Developmental psychobiology
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journal_title:Developmental psychobiology
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journal_title:Developmental psychobiology
pub_type: 杂志文章
doi:10.1002/dev.21586
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journal_title:Developmental psychobiology
pub_type: 杂志文章
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journal_title:Developmental psychobiology
pub_type: 杂志文章
doi:10.1002/dev.20586
更新日期:2011-09-01 00:00:00
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journal_title:Developmental psychobiology
pub_type: 杂志文章
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更新日期:2019-03-01 00:00:00
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journal_title:Developmental psychobiology
pub_type: 杂志文章
doi:10.1002/dev.420220406
更新日期:1989-05-01 00:00:00
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journal_title:Developmental psychobiology
pub_type: 杂志文章
doi:10.1002/dev.20240
更新日期:2007-07-01 00:00:00
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journal_title:Developmental psychobiology
pub_type: 杂志文章
doi:10.1002/dev.420220203
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pub_type: 杂志文章,评审
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journal_title:Developmental psychobiology
pub_type: 杂志文章
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journal_title:Developmental psychobiology
pub_type: 杂志文章
doi:10.1002/dev.20211
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pub_type: 杂志文章
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journal_title:Developmental psychobiology
pub_type: 杂志文章
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更新日期:1977-09-01 00:00:00
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journal_title:Developmental psychobiology
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更新日期:1981-03-01 00:00:00
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journal_title:Developmental psychobiology
pub_type: 传,历史文章,杂志文章
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