Positive and negative emotional arousal increases duration of memory traces: Common and independent mechanisms

F. Cruciani, A. Berardi, S. Cabib, D. Conversi

Research output: Contribution to journalArticlepeer-review

Abstract

We compared the ability of positive and negative emotional arousal to increase the duration of consolidated memory traces. Positive arousal was modulated by manipulating the motivational salience of the testing cage of an object recognition test. Negative emotional arousal was modulated by manipulating shock levels in a step-through inhibitory avoidance (IA). Mice trained in either a high (chocolate-associated) or a low (inedible object-associated) emotionally arousing cage showed discrimination of a novel object 24 h after training, but only mice trained in the more arousing cage showed retention 96 h after training. Mice trained with either low (0.35 mA) or high (0.7 mA) shock intensities showed increased stepthrough latencies when tested 24 h after training, but only mice trained with the higher shock intensity showed retention of the IA learning 1 week after training. Administration of the phosphodiesterase type IV inhibitor Rolipram immediately after training in the two low arousing conditions increases duration of both responses.

Original languageEnglish
Article number86
JournalFrontiers in Behavioral Neuroscience
Issue numberDECEMBER
DOIs
Publication statusPublished - Dec 23 2011

Keywords

  • cAMP
  • Emotional arousal
  • Hedonic valence
  • Inhibitory avoidance
  • Long-term memory
  • Object recognition
  • Persistence
  • Rolipram

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Cognitive Neuroscience
  • Neuropsychology and Physiological Psychology

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