Casey Exp 2
- Created by: HarrietTammadge
- Created on: 13-11-18 15:56
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- Casey 2011 Exp 2
- Aim
- LD show less activity in the inferior frontal gyrus and more activity in the ventral striatum
- Participants
- 27Ps agreed to partake. 15HD and 11LD.
- 1 P was excluded for poor performance
- Procedure
- fMRI used to examine brain activity.
- 'hot' version of the go/nogo task similar to exp 1 was used.
- 48 trials presented
- Each face presented for 500 milliseconds and intervals were between 2 and 14.5 seconds.
- Results
- No significant differences in reaction times
- Both groups high accuracy for 'go' trials
- LD more false alarms
- Right inferior frontal gyrus involved in witholding responses.
- Ventral striatum (reward related region) more activity in LD
- Conclusions
- DOG is stable characteristic over time
- Contextual factors can influence DOG ('hot' trials'
- LD shows less activity in the inferior frontal gyrus and more in the ventral striatum
- Aim
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