Decreased olfactory discrimination is associated with impulsivity in healthy volunteers.pdf (1.16 MB)
Decreased olfactory discrimination is associated with impulsivity in healthy volunteers
journal contribution
posted on 2023-06-09, 15:41 authored by Aleksandra Herman, Hugo CritchleyHugo Critchley, Dora DukaIn clinical populations, olfactory abilities parallel executive function, implicating shared neuroanatomical substrates within the ventral prefrontal cortex. In healthy individuals, the relationship between olfaction and personality traits or certain cognitive and behavioural characteristics remains unexplored. We therefore tested if olfactory function is associated with trait and behavioural impulsivity in nonclinical individuals. Eighty-three healthy volunteers (50 females) underwent quantitative assessment of olfactory function (odour detection threshold, discrimination, and identifcation). Each participant was rated for trait impulsivity index using the Barratt Impulsiveness Scale and performed a battery of tasks to assess behavioural impulsivity (Stop Signal Task, SST; Information Sampling Task, IST; Delay Discounting). Lower odour discrimination predicted high ratings in non-planning impulsivity (Barratt Non-Planning impulsivity subscale); both, lower odour discrimination and detection threshold predicted low inhibitory control (SST; increased motor impulsivity). These fndings extend clinical observations to support the hypothesis that defcits in olfactory ability are linked to impulsive tendencies within the healthy population. In particular, the relationship between olfactory abilities and behavioural inhibitory control (in the SST) reinforces evidence for functional overlap between neural networks involved in both processes. These fndings may usefully inform the stratifcation of people at risk of impulse-control-related problems and support planning early clinical interventions.
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Publication status
- Published
File Version
- Published version
Journal
Scientific ReportsISSN
2045-2322Publisher
Nature ResearchExternal DOI
Issue
1Volume
8Page range
15584 1-8Department affiliated with
- BSMS Neuroscience Publications
Research groups affiliated with
- Sussex Addiction Research and Intervention Centre (SARIC) Publications
- Sackler Centre for Consciousness Science Publications
- Sussex Neuroscience Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-11-01First Open Access (FOA) Date
2018-11-01First Compliant Deposit (FCD) Date
2018-10-31Usage metrics
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