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=== Procedure ===
The procedure utilised in supporting the between-systems memory interference model was published under the title ''Between-systems memory interference during retrieval''. Their paper explains how using the age-tested [[Fear conditioning|contextual fear conditioning]] paradigm allowed Fraser Sparks, Hugo Lehmann, and Robert Sutherland <ref>{{cite journal|last=Sparks|first=Fraser|coauthors=Lehmann H., Sutherland R.J.|title=Between-systems memory interference during retrieval|journal=European Journal of Neuroscience|year=2011|issue=36|pages=780–786|doi=10.1111/j.1460-9568.2011.07796.x|volume=34}}</ref> to further investigate their model. They began by allowing their rat subjects to freely explore the [[Operant conditioning chamber|conditioning chamber]] for three minutes, enabling them to become [[Habituation|habituated]]. Afterwards, five 1 miliAmp foot shocks lasting 2 seconds were administered with 60 seconds in between each shock. Retention of this memory was tested 11 days after the learning trials, where [[Freezing behavior|freezing behaviour]] was measured using [http://www.coulbourn.com/SearchResults.asp?searching=Y&sort=7&search=freezeframe&show=50&page=1 FreezeFrame Video-Based Conditioned Fear System].
Using this paradigm, the rats were [[Bilateral symmetry|bilaterally]] injected with either [[muscimol]] or [[Physiological saline|sterile physiological saline]] depending on if they were in the experimental or control condition respectively. These total hemispheric infusions were administered one hour before the [[Conditioning|conditioning trials]], additionally immediately before the testing trials, allowing 30 minutes total between the end of infusion and behavioural conditioning or testing.
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