Dopamine Operates as a Subsecond Modulator of Food Seeking

By M. Roitman, Garret D. Stuber, P. Phillips, R. Wightman, Regina M. Carelli. Journal of Neuroscience, 2004

701 citations recorded by the source corpus.

The dopamine projection to the nucleus accumbens has been implicated in behaviors directed toward the acquisition and consumption of natural rewards. The neurochemical studies that established this link made time-averaged measurements over minutes, and so the precise temporal relationship between dopamine changes and these behaviors is not known. To resolve this, we sampled dopamine every 100 msec using fast-scan cyclic voltammetry at carbon-fiber microelectrodes in the nucleus accumbens of rats trained to press a lever for sucrose. Cues that signal the opportunity to respond for sucrose evoked dopamine release (67 ± 20 nm) with short latency (0.2 ± 0.1 sec onset). When the same cues were presented to rats naive to the cue-sucrose pairing, similar dopamine signals were not observed. Thus, cue-evoked increases in dopamine in trained rats reflected a learned association between the cues and sucrose availability. Lever presses for sucrose occurred at the peak of the dopamine surges. After lever presses, and while sucrose was delivered and consumed, no further increases in dopamine were detected. Rather, dopamine returned to baseline levels. Together, the results strongly implicate subsecond dopamine signaling in the nucleus accumbens as a real-time modulator of food-seeking behavior.

Subfields: Cellular and Molecular Neuroscience, Cognitive Neuroscience, Sensory Systems

View Paper: https://www.semanticscholar.org/paper/550fce4c6ef165c7343c730db6118efd9f326b5e

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Cellular and Molecular Neuroscience

  1. Kent C. Berridge
  2. Yael Niv
  3. Peter S. Dayan
  4. Nora D. Volkow
  5. Wolfram Schultz
  6. Mark T. Harnett
  7. Nathaniel D. Daw
  8. John Salamone

In Cognitive Neuroscience

  1. Kent C. Berridge
  2. Peter S. Dayan
  3. Yael Niv
  4. Nathaniel D. Daw
  5. Nora D. Volkow
  6. Michael J Frank
  7. Mark T. Harnett
  8. Ann M. Graybiel

In Sensory Systems

  1. Kent C. Berridge
  2. Mark T. Harnett
  3. Mercè Correa
  4. John Salamone
  5. Morten L. Kringelbach
  6. A. Kelley
  7. Wolfram Schultz
  8. Nathaniel D. Daw

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