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Neural Regulation01:37

Neural Regulation

Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.

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Related Experiment Video

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Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety
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Closed-loop modulation of remote hippocampal representations with neurofeedback.

Michael E Coulter1, Anna K Gillespie2, Joshua Chu3

  • 1Kavli Institute and Department of Physiology, UCSF, San Francisco, CA, USA; Howard Hughes Medical Institute, Chevy Chase, MD, USA.

Neuron
|January 21, 2025
PubMed
Summary

Rats learned to deliberately activate specific spatial memories without external cues. This neurofeedback study allows direct investigation of memory retrieval processes in the brain.

Keywords:
behaviorbrain-machine interfacedecodinghippocampusmemoryneurofeedbackplace cellsratretrievalspatial representation

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Animal Behavior

Background:

  • Human memory retrieval can be internally driven, unlike animal models which rely on external cues and actions.
  • Distinguishing neural activity related to memory cues, the memory itself, or behavior is challenging in current animal models.

Purpose of the Study:

  • To investigate if neural activity related to memory retrieval can be generated in animals without sensory cues or behavioral output.
  • To explore the deliberate engagement of remote spatial representations in the hippocampus.

Main Methods:

  • Utilized a neurofeedback system to reward the expression of remote spatial representations in rats.
  • Focused on hippocampal place cells, which can represent both current and remote locations.

Main Results:

  • Rats successfully learned to generate specific spatial representations on demand.
  • These representations often directly targeted experimenter-defined locations, demonstrating deliberate control.
  • This indicates animals can intentionally engage remote memory representations.

Conclusions:

  • Animals can deliberately engage remote memory representations without external triggers or actions.
  • This finding enables direct study of retrieval-related neural activity, advancing our understanding of memory processes.