Related Experiment Videos
Bidirectional synaptic plasticity can explain bidirectional retrograde effects of emotion on memory
Bryan A Strange1, Ana Galarza-Vallejo1
1Laboratory for Clinical Neuroscience,Centro de Tecnología Biomédica,Universidad Politecnica de Madrid,Pozuelo de Alarcón,Madrid 28223,Spainbryan.strange@upm.esana.galarza@ctb.upm.eswww.thestrangelab.org.
The Behavioral and Brain Sciences
|March 31, 2017
Summary
Emotional events impact memory, either impairing or enhancing recall. This study proposes a new model where priority signals, not arousal states, drive noradrenaline release, explaining memory effects.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Memory Research
Background:
- Emotional events have a bidirectional effect on memory for preceding items.
- The existing GANE model attributes this to a glutamate priority signal modulating noradrenaline release based on arousal.
Purpose of the Study:
- To propose an alternative explanation for the bidirectional memory effects of emotional events.
- To investigate the role of priority signals in evoking noradrenaline release.
Main Methods:
- Theoretical modeling based on the Bienenstock-Cooper-Munro theory.
- Analysis of existing data on emotional events and memory recall.
Main Results:
- Priority signals, rather than arousal states, are proposed to evoke phasic noradrenaline release.
- This mechanism explains the contrasting memory enhancement and impairment effects.
Conclusions:
- The proposed mechanism offers a novel explanation for memory modulation by emotional events.
- This framework challenges the GANE model by emphasizing priority over arousal.