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Olfactory Influence...
Olfactory Influences on Visual Categorization : Behavioral and ERP Evidence
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- Hörberg, Thomas, 1979- (författare)
- Stockholms universitet,Perception och psykofysik,Avdelningen för allmän språkvetenskap
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- Larsson, Maria (författare)
- Stockholms universitet,Perception och psykofysik
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- Ekström, Ingrid, 1988- (författare)
- Karolinska Institutet,Stockholms universitet,Avdelningen för allmän språkvetenskap,Centrum för forskning om äldre och åldrande (ARC), (tills m KI)
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- Sandöy, Camilla (författare)
- Stockholms universitet,Perception och psykofysik
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- Lundén, Peter (författare)
- Stockholms universitet,Perception och psykofysik
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- Olofsson, Jonas K. (författare)
- Stockholms universitet,Perception och psykofysik
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(creator_code:org_t)
- 2020-03-30
- 2020
- Engelska.
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Ingår i: Cerebral Cortex. - : Oxford University Press (OUP). - 1047-3211 .- 1460-2199. ; 30:7, s. 4220-4237
- Relaterad länk:
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https://doi.org/10.1...
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https://su.diva-port... (primary) (Raw object)
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https://academic.oup...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- Visual stimuli often dominate nonvisual stimuli during multisensory perception. Evidence suggests higher cognitive processes prioritize visual over nonvisual stimuli during divided attention. Visual stimuli should thus be disproportionally distracting when processing incongruent cross-sensory stimulus pairs. We tested this assumption by comparing visual processing with olfaction, a “primitive” sensory channel that detects potentially hazardous chemicals by alerting attention. Behavioral and event-related brain potentials (ERPs) were assessed in a bimodal object categorization task with congruent or incongruent odor–picture pairings and a delayed auditory target that indicated whether olfactory or visual cues should be categorized. For congruent pairings, accuracy was higher for visual compared to olfactory decisions. However, for incongruent pairings, reaction times (RTs) were faster for olfactory decisions. Behavioral results suggested that incongruent odors interfered more with visual decisions, thereby providing evidence for an “olfactory dominance” effect. Categorization of incongruent pairings engendered a late “slow wave” ERP effect. Importantly, this effect had a later amplitude peak and longer latency during visual decisions, likely reflecting additional categorization effort for visual stimuli in the presence of incongruent odors. In sum, contrary to what might be inferred from theories of “visual dominance,” incongruent odors may in fact uniquely attract mental processing resources during perceptual incongruence.
Ämnesord
- SAMHÄLLSVETENSKAP -- Psykologi -- Psykologi (hsv//swe)
- SOCIAL SCIENCES -- Psychology -- Psychology (hsv//eng)
Nyckelord
- event-related brain potentials
- object categorization
- olfaction
- olfactory-visual processing
- visual dominance
- psykologi
- Psychology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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