Overview
- UCLA researchers report that a dopamine-producing region called the ventral tegmental area became more active when a new event began in a lab task.
- Participants later judged image pairs that crossed these event boundaries as farther apart in time even though the actual gaps were identical.
- Stronger activity in the ventral tegmental area tracked with more eye blinks, a behavior often tied to dopamine signaling during perception.
- The study tested 32 volunteers who viewed neutral objects as tones repeated and then switched to mark four segments and it appears in Nature Communications with NIH funding.
- The authors caution that fMRI cannot verify dopamine release or causation and they call for larger, naturalistic studies to test real-world relevance.