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Value-based cognition and drug dependency.

Kavinash Loganathan1

  • 1Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne, Melbourne, Victoria, Australia.

Addictive Behaviors
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Drug addiction significantly impacts decision-making, learning, attention, and memory. This review shows how drug use biases cognitive systems, driving the motivated pursuit of addictive substances.

Keywords:
AddictionBrain networksCognitionDrug dependencyFMRIValue

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Area of Science:

  • Neuroscience
  • Psychology
  • Addiction Research

Background:

  • Value-based decision-making is crucial in understanding drug dependency.
  • Drug use can lead to altered internal states, motivating consumption.
  • Cognitive biases towards drugs emerge, affecting learning, attention, and memory.

Purpose of the Study:

  • To review the effects of drug use on cognitive functions, specifically learning, attention, and memory.
  • To examine changes in brain-wide functional networks due to drug use.
  • To integrate these cognitive changes into the cycle of addiction model.

Main Methods:

  • This study is a narrative review.
  • It synthesizes findings on how drug use impacts cognitive systems.
  • It focuses on changes in brain networks and their behavioral consequences.

Main Results:

  • Drug use elevates the salience of drugs and related cues.
  • Cognitive systems become biased towards the pursuit of addictive drugs.
  • These biases are present throughout the addiction cycle, contributing to dependency.

Conclusions:

  • Excessive valuation of drugs impacts decision-making, learning, attention, and memory.
  • Cognitive changes narrow focus towards drug pursuit and consumption.
  • These biases may explain the persistent nature of drug addiction.