Cited by 380Pain Mechanisms and TreatmentsPain Management and Placebo EffectPain Management and Treatment

Dissociable neural responses related to pain intensity, stimulus intensity, and stimulus awareness within the anterior cingulate cortex: a parametric single-trial laser functional magnetic resonance imaging study.

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Büchel, Christian, Bornhövd, Karin, Quante, Markus, Glauche, Volkmar, Bromm, Burkhard, Weiller, Cornelius·2002·The Journal of Neuroscience

Abstract

Neuroimaging studies have demonstrated activations in the anterior cingulate cortex (ACC) related to the affective component of pain, but not to stimulus intensity. However, it is possible that the low spatial resolution of positron emission tomography, as used in the majority of these studies, obscured areas coding stimulus intensity. We revisited this issue, using a parametric single-trial functional magnetic resonance imaging design, and investigated pain, stimulus intensity, and stimulus awareness (i.e., pain unrelated) responses within the ACC in nine healthy volunteers. Four different stimulus intensities ranging from warm to painful (300-600 mJ) were applied with a thulium yttrium-aluminum granite infrared laser in a randomized order and rated by the subjects on a five point scale (P0-P4). Pain-related regions in the ventral posterior ACC showed a response that did not distinguish between innocuous trials (P0 and P1) but showed a positive linear relationship with the blood oxygenation level-dependent contrast signal for painful trials (P2-P4). Regions in the dorsal anterior ACC along the cingulate sulcus differentiated between P0 (not perceived) and P1 but exhibited no additional signal increase with P2; these regions are related to stimulus awareness and probably to cognitive processing. Most importantly, we identified a region in the dorsal posterior ACC showing a response that discriminated between nonpainful trials (P0 and P1); therefore, this region was simply related to basic sensory processing and not to pain intensity. Stimulus-related activations were all located adjacent to the cingulate motor area, highlighting the strategic link of stimulus processing and response generation in the posterior ACC.

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Authors
Büchel, C., Bornhövd, K., Quante, M., Glauche, V., Bromm, B., & Weiller, C.
Affiliations
Universität Hamburg (DE)
Venue
The Journal of Neuroscience
Published
2002-02-01
Volume
22
Issue
3
Pages
970-976
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1586418027
Cited by
380
References
52
Citations by year
2026: 1 · 2025: 4 · 2024: 5 · 2023: 12 · 2022: 4 · 2021: 9 · 2020: 13 · 2019: 11 · 2018: 10 · 2017: 18 · 2016: 16 · 2015: 15 · 2014: 13 · 2013: 9 · 2012: 19
FWCI
12.37
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Volkswagen Foundation
Topics
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Pain Management and Placebo Effect
  • Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
Keywords
anterior cingulate cortex, pain intensity, stimulus intensity, stimulus awareness, affective pain, cingulate motor area, single-trial fMRI, BOLD signal, sensory processing, cingulate sulcus
MeSH terms
Adult, Affect, Dose-Response Relationship, Radiation, Emotions, Female, Gyrus Cinguli, Humans, Infrared Rays, Lasers, Magnetic Resonance Imaging, Male, Motor Activity, Neurons, Pain, Pain Measurement, Physical Stimulation, Pain Threshold

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