Decoding the Brain's Memory System: Insights from the Hippocampus | Dr Marielena Sosa

Описание: How does the brain build memory — and why does reward reshape what we remember?

In this episode of The Vitality Lab, I sit down with Marielena Sosa to discuss her postdoctoral research at Stanford University, where she investigated how the hippocampus encodes space, context, and reward to construct cognitive maps of experience.

Dr. Sosa is now a Principal Investigator at University of Colorado Boulder, leading a lab focused on the neural mechanisms of memory, prediction, and contextual representation.

In this conversation, we explore:

• How memory is not passive storage but active prediction
• How reward reorganizes neural representations in the hippocampus
• The relationship between spatial encoding and value
• What breaks down in aging and Alzheimer’s disease
• Whether music and dance can engage compensatory neural circuits in Parkinson’s disease

This episode moves from fundamental systems neuroscience to translational questions about neurodegeneration, plasticity, and how the brain continuously updates its internal model of the world.

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Chapters:

00:00 Understanding the Hippocampus and Memory
02:01 Types of Memory: Episodic vs Procedural
03:47 The Hippocampus and Brain Connectivity
05:13 Memory Formation and Dementia
08:04 Emotional Influence on Episodic Memory
09:27 Dopamine's Role in Memory
14:09 Place Cells: The Brain's GPS
23:34 Grid Cells and Navigation
29:49 Exploring Cell Types and Experimental Design
33:01 The Interplay of Grid Cells and Place Cells
34:07 Understanding Cognitive Maps
36:00 Aging and Cognitive Maps
39:48 Cellular Mechanisms in Memory and Aging
41:45 The Impact of Alcohol on Memory
42:53 Cognitive Maps and Reward
48:26 Gamification and Memory Enhancement
51:24 Predictive Nature of the Hippocampus
53:47 Dopamine and Reward Estimation
56:12 The Complexity of Reward Systems
57:39 Dance Therapy and Parkinson's Disease
01:00:26 Music, Memory, and Movement
01:04:40 Contextual Cues in Memory Recall
01:06:22 Innovative Approaches to Memory Enhancement
01:09:21 Neuroplasticity and Therapeutic Strategies