Olfactory identification deficits and associated response inhibition in obsessive-compulsive disorder: On the scent of the orbitofronto–striatal model
Abstract
Olfactory identification ability implicates the integrity of the orbitofrontal cortex (OFC). The fronto-striatal circuits including the OFC have been involved in the neuropathology of Obsessive Compulsive Disorder (OCD). However, only a few studies have examined olfactory function in patients with OCD. The Brief Smell Identification Test (B-SIT) and tests from the Cambridge Neuropsychological Automated Battery (CANTAB) were administered to 25 patients with OCD and to 21 healthy matched controls. OCD patients showed a significant impairment in olfactory identification ability as well as widely distributed cognitive deficits in visual memory, executive functions, attention, and response inhibition. The degree of behavioural impairment on motor impulsivity (prolonged response inhibition Stop-Signal Reaction Time) strongly correlated with the B-SIT score. Our study is the first to indicate a shared OFC pathological neural substrate underlying olfactory identification impairment, impulsivity, and OCD. Deficits in visual memory, executive functions and attention further indicate that regions outside of the orbitofronto-striatal loop may be involved in this disorder. Such results may help delineate the clinical complexity of OCD and support more targeted investigations and interventions. In this regard, research on the potential diagnostic utility of olfactory identification deficits in the assessment of OCD would certainly be useful.
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Cognitive inflexibility in OCD is linked to aberrant processing in frontostriatal circuits, including dorsolateral and ventrolateral prefrontal and striatal areas.
“Cognitive inflexibility in OCD is linked to aberrant processing in frontostriatal circuits, including dorsolateral and ventrolateral prefrontal and striatal areas”
From Obsessive-compulsive disorder: Etiology, neuropathology, and cognitive dysfunction (2023) · cites this paper as Bersani et al., 2013
Patients with OCD perform less well than healthy controls on the Paired Associates Learning test (PAL).
“A number of studies have shown that patients with OCD perform less well than healthy controls on the PAL”
From Obsessive-compulsive disorder: Etiology, neuropathology, and cognitive dysfunction (2023) · cites this paper as Bersani et al., 2013
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- Authors
- Bersani, G., Quartini, A., Ratti, F., Pagliuca, G., & Gallo, A.
- Affiliations
- Sapienza University of Rome (IT)
- Corresponding author
- Bersani, Giuseppe
- Venue
- Psychiatry Research
- Publisher
- Elsevier BV
- Published
- 2013-11
- Volume
- 210
- Issue
- 1
- Pages
- 208-214
- ISSN
- 0165-1781 (ISSN-L)
- OpenAlex
- W1967848744
- Cited by
- 34
- References
- 58
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 2 · 2023: 4 · 2022: 2 · 2021: 3 · 2019: 3 · 2018: 6 · 2017: 4 · 2016: 2 · 2015: 2 · 2014: 1
- FWCI
- 1.85
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Psychiatry Research (publishedVersion)
- PubMed (publishedVersion)
- IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
- Topics
- Social Sciences › Psychology › Clinical Psychology › Obsessive-Compulsive Spectrum Disorders
- Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Keywords
- obsessive-compulsive disorder, odor identification, orbitofrontal cortex, response inhibition, impulsivity, stop-signal reaction time, visual memory, executive function, attention, Brief Smell Identification Test, CANTAB
- MeSH terms
- Adult, Analysis of Variance, Olfaction Disorders, Attention, Cognition Disorders, Corpus Striatum, Female, Humans, Inhibition, Psychological, Male, Middle Aged, Neuropsychological Tests, Obsessive-Compulsive Disorder, Prefrontal Cortex, Young Adult, Executive Function
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 ›
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