ERIC Number: EJ1043726
Record Type: Journal
Publication Date: 2014-Nov
Abstractor: As Provided
Reference Count: N/A
Visualization of Plasticity in Fear-Evoked Calcium Signals in Midbrain Dopamine Neurons
Gore, Bryan B.; Soden, Marta E.; Zweifel, Larry S.
Learning & Memory, v21 n11 p575-579 Nov 2014
Dopamine is broadly implicated in fear-related processes, yet we know very little about signaling dynamics in these neurons during active fear conditioning. We describe the direct imaging of calcium signals of dopamine neurons during Pavlovian fear conditioning using fiber-optic confocal microscopy coupled with the genetically encoded calcium indicator GCaMP3. We observed calcium transients in a subset of dopamine neurons to an unconditioned fear stimulus on the first day of Pavlovian fear conditioning. On the second day, calcium transients occurred in response to conditioned and unconditioned stimuli. These results demonstrate plasticity in dopamine neuron calcium signals and the occurrence of activity-dependent processes in these neurons during fear conditioning.
Descriptors: Fear, Conditioning, Neurological Organization, Measurement Equipment, Genetics, Stimuli, Responses, Brain
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A