Li et al. (2013) - Biological

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1. There was a strong connection between the PCC (posterior cingulate cortex) and the BDS (bilateral dorsal striatum) - r=+0.5, and the BI (bilateral insula) - r=+0.6, which demonstrates a significant positive correlation. What does this suggest?

  • The longer the participant had been addicted, the stronger these connections were
  • The longer the participant had been addicted, the weaker these connections were
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2. How many participants were used in the study?

  • 98 non-drug addicts
  • 14 drug addicts and 14 healthy individuals
  • 50 non-drug addicts
  • 75 drug addicts and 2 healthy individuals

3. How many pictures were the participants shown?

  • 32 - 16 neutral, 16 drug related
  • 48 - 24 neutral, 24 drug related
  • 50 - 25 neutral, 25 drug related

4. What were the participants initially tested for?

  • Right handedness, claustrophobia, head trauma and absence of other drugs
  • Right handedness, claustrophobia and absence of other drugs
  • Claustrophobia, left handedness and head trauma
  • Absence of other drugs, head trauma and right handedness

5. What is the bilateral insula responsible for?

  • Controls anger and aggression
  • Associating emotional feelings with decision making
  • Reward system
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