The Tale of Two Roses: The Shaping of Sensory Coding Neuronal Ensembles by Reward and Norepinephrine
Material below summarizes the article Arc-Expressing Neuronal Ensembles Supporting Pattern Separation Require Adrenergic Activity in Anterior Piriform Cortex: An Exploration of Neural Constraints on Learning, on October 14, 2015, in JNeurosci and authored by Amin MD. Shakhawat, Ali Gheidi, Iain T. MacIntyre, Melissa L. Walsh, Carolyn W. Harley, and Qi Yuan.
“No man ever steps in the same river twice, for it’s not the same river and he’s not the same man,” said Heraclitus around 500 BC. We live in a highly fluctuating environment, and our mental state is constantly changing. How we perceive a sensory cue is dependent on the environmental background and is based on our previous experience. Each sniff of a rose is a unique experience. How is the smell of a rose encoded in the brain? How do we form memories of different flower smells and distinguish one from another?
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