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Inescapable Stress Changes Walking Behavior in Flies - Learned Helplessness Revisited
Please always quote using this URN: urn:nbn:de:bvb:20-opus-178640
- Like other animals flies develop a state of learned helplessness in response to unescapable aversive events. To show this, two flies, one 'master', one 'yoked', are each confined to a dark, small chamber and exposed to the same sequence of mild electric shocks. Both receive these shocks when the master fly stops walking for more than a second. Behavior in the two animals is differently affected by the shocks. Yoked flies are transiently impaired in place learning and take longer than master flies to exit from the chamber towards light. AfterLike other animals flies develop a state of learned helplessness in response to unescapable aversive events. To show this, two flies, one 'master', one 'yoked', are each confined to a dark, small chamber and exposed to the same sequence of mild electric shocks. Both receive these shocks when the master fly stops walking for more than a second. Behavior in the two animals is differently affected by the shocks. Yoked flies are transiently impaired in place learning and take longer than master flies to exit from the chamber towards light. After the treatment they walk more slowly and take fewer and shorter walking bouts. The low activity is attributed to the fly's experience that its escape response, an innate behavior to terminate the electric shocks, does not help anymore. Earlier studies using heat pulses instead of electric shocks had shown similar effects. This parallel supports the interpretation that it is the uncontrollability that induces the state.…
Author: | Sophie Batsching, Reinhard Wolf, Martin Heisenberg |
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URN: | urn:nbn:de:bvb:20-opus-178640 |
Document Type: | Journal article |
Faculties: | Fakultät für Biologie / Rudolf-Virchow-Zentrum |
Language: | English |
Parent Title (English): | PLoS ONE |
Year of Completion: | 2016 |
Volume: | 11 |
Issue: | 11 |
Article Number: | e0167066 |
Source: | PLoS ONE 2016, 11(11):e0167066. DOI: 10.1371/journal.pone.0167066 |
DOI: | https://doi.org/10.1371/journal.pone.0167066 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
Tag: | animal behavior; behavioral conditioning; conditioned response; learning; light pulses; locomotion; vibration; walking |
Release Date: | 2020/12/10 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |