Cited by 288Neurotransmitter Receptor Influence on BehaviorTryptophan and brain disordersTreatment of Major Depression

Covariation of activity in habenula and dorsal raphe nuclei following tryptophan depletion

Open access
Morris, J.S., Smith, K.A., Cowen, P.J., Friston, K.J., Dolan, R.J.·1999·NeuroImage

Abstract

Abnormal serotonergic function is implicated in the pathogenesis of affective disorders. We induced transient depressive relapses in volunteer patients by rapidly depleting plasma tryptophan, the precursor of serotonin (5-HT), and measured neural activity during different cognitive tasks using positron emission tomography (PET). Neural activity in several 5-HT-related brain areas, e.g., dorsal raphé, habenula, septal region, amygdala, and orbitofrontal cortex, covaried significantly with plasma levels of tryptophan and ratings of depressed mood. Task-specific responses in left amygdala and left anterior cingulate were attenuated by tryptophan depletion. We used these PET data to test the hypothesis that projections from the habenula modulate dorsal raphé activity and that this modulation is enhanced in patients experiencing a profound mood change following serotonergic challenge. A strong linear correlation (r(2) > 0.5) between habenula and raphé activity was observed in subjects with postdepletion ratings >/=10 on a modified Hamilton depression scale, whereas subjects experiencing milder changes in mood had weaker habenula-raphé coupling (r(2) < 0.5). These data support a model of the serotonergic system in which the habenula projection to the raphé represents a convergent feedback pathway that controls the release of 5-HT throughout the brain. In our experiment we were able to engage this system in patients who were sensitive to tryptophan depletion.

Integrity signals

Registry

Crossref · 10.1006/nimg.1999.0455

Cites

46 of 46 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The lateral habenula is implicated in negative mood states in both animal and human research.

    “The LHb is implicated in negative mood states in both animal and human research.”

    From Deep brain stimulation for depression. (2022) · cites this paper as [42]

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Morris, J. S., Smith, K. A., Cowen, P. J., Friston, K. J., & Dolan, R. J.
Affiliations
  • National Hospital for Neurology and Neurosurgery (GB)
  • Warneford Hospital (GB)
  • The Royal Free Hospital (GB)
Corresponding author
Dolan, R.J.
Venue
NeuroImage
Publisher
Elsevier BV
Published
1999-08
Volume
10
Issue
2
Pages
163-172
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2030196595
Cited by
288
References
45
Citations by year
2026: 5 · 2025: 6 · 2024: 18 · 2023: 9 · 2022: 14 · 2021: 15 · 2020: 8 · 2019: 16 · 2018: 18 · 2017: 17 · 2016: 16 · 2015: 16 · 2014: 17 · 2013: 21 · 2012: 14
FWCI
1.57
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Max Planck Digital Library (submittedVersion, other-oa)
  • MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
Funders
Wellcome Trust
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
tryptophan depletion, serotonin, habenula, dorsal raphe nucleus, serotonergic system, depression, amygdala, anterior cingulate cortex, mood disorders, depressive mood
MeSH terms
Adult, Amygdala, Arousal, Attention, Brain Mapping, Major Depressive Disorder, Gyrus Cinguli, Humans, Image Processing, Computer-Assisted, Male, Middle Aged, Raphe Nuclei, Recurrence, Serotonin, Tomography, Emission-Computed, Tryptophan, Verbal Behavior, Habenula

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review