Source 1review2016Neural Plasticity
Toolkit/forced swim test
forced swim test
Also known as: FST
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
In the forced swim test (FST) rodents progressively show increased episodes of immobility if immersed in a beaker with water from where escape is not possible.
Usefulness & Problems
Why this is useful
The forced swim test measures how rodents transition from active to passive coping when escape from water is impossible. In this review, it is framed as a stress-coping paradigm rather than a direct depression assay.; investigating stress coping and adaptation; measuring transition from active to passive coping behavior; screening compounds that prevent or delay passive coping in this assay
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The forced swim test measures how rodents transition from active to passive coping when escape from water is impossible. In this review, it is framed as a stress-coping paradigm rather than a direct depression assay.
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investigating stress coping and adaptation
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measuring transition from active to passive coping behavior
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screening compounds that prevent or delay passive coping in this assay
Problem solved
It offers a tractable behavioral paradigm for probing mechanisms of stress coping, adaptation, and the active-to-passive response transition.; provides a behavioral paradigm to study coping with an inescapable stressor
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It offers a tractable behavioral paradigm for probing mechanisms of stress coping, adaptation, and the active-to-passive response transition.
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provides a behavioral paradigm to study coping with an inescapable stressor
Problem links
provides a behavioral paradigm to study coping with an inescapable stressor
LiteratureIt offers a tractable behavioral paradigm for probing mechanisms of stress coping, adaptation, and the active-to-passive response transition.
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It offers a tractable behavioral paradigm for probing mechanisms of stress coping, adaptation, and the active-to-passive response transition.
Published Workflows
Objective: Use the forced swim paradigm to dissect phases of information processing during stress coping and adaptation rather than to treat immobility as a direct depression readout.
Why it works: The review organizes forced-swim behavior into phases of information processing, linking the transition during stress and the post-stress memory phase to distinct receptor and circuit functions.
corticosterone signalingMR-mediated response selectionGR-dependent memory storageprefrontal and accumbal executive circuitrybehavioral assay interpretationmechanistic phase decomposition
Stages
- 1.active-to-passive coping transition during forced swim(functional_characterization)
The review treats the in-beaker behavioral transition as a distinct information-processing phase regulated by MR and executive circuitry.
Selection: Behavioral transition from active to passive coping during inescapable swim stress.
- 2.post-rescue memory storage of coping style(secondary_characterization)
The review explicitly separates post-rescue memory storage from the in-swim response-selection phase and links it to GR-dependent dentate gyrus action.
Selection: Storage of the preferred coping style in memory after rescue from the beaker.
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete measurement method used to characterize an engineered system.
Mechanisms
behavioral state transition from active to passive coping under inescapable stressgr-dependent memory storage in the hippocampal dentate gyrusmr- and gr-associated corticosteroid signaling in limbic circuitsstress-coping adaptationTarget processes
recombinationselectionImplementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensor
The abstract supports use in rodents and requires an inescapable water-filled beaker plus behavioral scoring of immobility or coping style. No further protocol details are provided in the supplied text.; requires rodent immersion in an inescapable water-filled beaker; readout depends on observing active-to-passive behavioral transition
According to the review, it should not be taken as a direct readout of depression. The abstract also does not support detailed protocol standardization or mechanistic sufficiency on its own.; the review concludes the behavioral response does not reflect depression; immobility is often mislabeled as a depression-like phenotype
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
The review argues that rodent behavior in the forced swim test reflects stress coping and adaptation rather than depression.
It is concluded that the rodent's behavioural response to a forced swim stressor does not reflect depression. Rather the forced swim experience provides a unique paradigm to investigate the mechanistic underpinning of stress coping and adaptation.
The review states that forced-swim immobility has increasingly been labeled as a depression-like phenotype in the literature.
A PubMed analysis revealed that in a rapidly increasing number of papers (currently more than 2,000) stress-related immobility in the FST is labeled as a depression-like phenotype.
The review proposes that after rescue from the beaker, the preferred coping style is stored in memory through a GR-dependent action in the hippocampal dentate gyrus.
Upon rescue from the beaker the preferred, mostly passive, coping style is stored in the memory via a GR-dependent action in the hippocampal dentate gyrus.
The review proposes that corticosterone acting through MR and GR in limbic brain circuits contributes to coping-related information processing during forced swim stress.
For this purpose we focus on the action of corticosterone that is mediated by the closely related mineralocorticoid receptors (MR) and glucocorticoid receptors (GR) in the limbic brain.
The review proposes that limbic MR-mediated response selection works with dopaminergic accumbens and prefrontal executive functions to regulate the transition between active and passive coping styles.
The evidence available suggests a model in which we propose that the limbic MR-mediated response selection operates in complementary fashion with dopaminergic accumbens/prefrontal executive functions to regulate the transition between active and passive coping styles.
Approval Evidence
1 source5 linked approval claimsfirst-pass slug forced-swim-test
In the forced swim test (FST) rodents progressively show increased episodes of immobility if immersed in a beaker with water from where escape is not possible.
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conceptual reframingsupports
The review argues that rodent behavior in the forced swim test reflects stress coping and adaptation rather than depression.
It is concluded that the rodent's behavioural response to a forced swim stressor does not reflect depression. Rather the forced swim experience provides a unique paradigm to investigate the mechanistic underpinning of stress coping and adaptation.
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field usage trendsupports
The review states that forced-swim immobility has increasingly been labeled as a depression-like phenotype in the literature.
A PubMed analysis revealed that in a rapidly increasing number of papers (currently more than 2,000) stress-related immobility in the FST is labeled as a depression-like phenotype.
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mechanistic modelsupports
The review proposes that after rescue from the beaker, the preferred coping style is stored in memory through a GR-dependent action in the hippocampal dentate gyrus.
Upon rescue from the beaker the preferred, mostly passive, coping style is stored in the memory via a GR-dependent action in the hippocampal dentate gyrus.
Source:
mechanistic modelsupports
The review proposes that corticosterone acting through MR and GR in limbic brain circuits contributes to coping-related information processing during forced swim stress.
For this purpose we focus on the action of corticosterone that is mediated by the closely related mineralocorticoid receptors (MR) and glucocorticoid receptors (GR) in the limbic brain.
Source:
mechanistic modelsupports
The review proposes that limbic MR-mediated response selection works with dopaminergic accumbens and prefrontal executive functions to regulate the transition between active and passive coping styles.
The evidence available suggests a model in which we propose that the limbic MR-mediated response selection operates in complementary fashion with dopaminergic accumbens/prefrontal executive functions to regulate the transition between active and passive coping styles.
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Comparisons
Source-stated alternatives
The supplied abstract does not name alternative assays. It mainly contrasts antidepressant-screening use of FST with the review's preferred coping-framework interpretation.
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The supplied abstract does not name alternative assays. It mainly contrasts antidepressant-screening use of FST with the review's preferred coping-framework interpretation.
Source-backed strengths
described as a unique paradigm to investigate mechanistic underpinning of stress coping and adaptation
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described as a unique paradigm to investigate mechanistic underpinning of stress coping and adaptation
Compared with assays
The supplied abstract does not name alternative assays. It mainly contrasts antidepressant-screening use of FST with the review's preferred coping-framework interpretation.
Shared frame: source-stated alternative in extracted literature
Strengths here: described as a unique paradigm to investigate mechanistic underpinning of stress coping and adaptation.
Relative tradeoffs: the review concludes the behavioral response does not reflect depression; immobility is often mislabeled as a depression-like phenotype.
Source:
The supplied abstract does not name alternative assays. It mainly contrasts antidepressant-screening use of FST with the review's preferred coping-framework interpretation.
Ranked Citations
- 1.