Hedonic-Specific Activity in Piriform Cortex During Odor Imagery Mimics That During Odor Perception

Bensafi, Moustafa; Sobel, Noam; Khan, Rehan

doi:10.1152/jn.00349.2007

Cited by 135 publications

(107 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been argued that odors are primarily perceived in terms of pleasantness (e.g., Yeshurun & Sobel, 2010), and odor (and taste) words have been found to be more emotionally valenced than words associated with the other perceptual modalities (Winter, 2016), so it follows pleasantness would be an important feature of mental simulation for this perceptual modality. In line with this, Bensafi, Sobel, and Kahn (2007b) found hedonic‐specific activity in piriform cortex during odor imagery. But if such simulation is occurring, it is hard to explain why odor‐words did not affect memory in Experiment 2.…”

Section: Discussionsupporting

confidence: 56%

An Exception to Mental Simulation: No Evidence for Embodied Odor Language

Speed¹,

Majid

2018

Cognitive Science

View full text Add to dashboard Cite

Do we mentally simulate olfactory information? We investigated mental simulation of odors and sounds in two experiments. Participants retained a word while they smelled an odor or heard a sound, then rated odor/sound intensity and recalled the word. Later odor/sound recognition was also tested, and pleasantness and familiarity judgments were collected. Word recall was slower when the sound and sound‐word mismatched (e.g., bee sound with the word typhoon). Sound recognition was higher when sounds were paired with a match or near‐match word (e.g., bee sound with bee or buzzer). This indicates sound‐words are mentally simulated. However, using the same paradigm no memory effects were observed for odor. Instead it appears odor‐words only affect lexical‐semantic representations, demonstrated by higher ratings of odor intensity and pleasantness when an odor was paired with a match or near‐match word (e.g., peach odor with peach or mango). These results suggest fundamental differences in how odor and sound‐words are represented.

show abstract

Section: Discussionsupporting

confidence: 56%

An Exception to Mental Simulation: No Evidence for Embodied Odor Language

Speed¹,

Majid

2018

Cognitive Science

View full text Add to dashboard Cite

show abstract

“…In contrast, whereas a similar picture was evident for odors in healthy controls (bottom left panel), it was not evident in odors for right lesioned patients (top left panel) in which odor pleasantness ratings significantly deviated from expectation. This anhedonia was reflected not only in explicit perceptual ratings but also in the olfactomotor response: consistent with results in young healthy subjects (Bensafi et al, 2003(Bensafi et al, , 2007, age-matched controls took longer sniffs of pleasant odorants and shorter sniffs of unpleasant odorants. In contrast, right hemisphere patients failed to modulate their sniff in accordance with odorant valence.…”

Section: Discussionsupporting

confidence: 86%

Spared and Impaired Olfactory Abilities after Thalamic Lesions

Sela¹,

Sacher²,

Serfaty³

et al. 2009

J. Neurosci.

View full text Add to dashboard Cite

Olfactory information reaches olfactory cortex without a thalamic relay. This neuroanatomical substrate has combined with functional findings to suggest that, in olfaction, the typical thalamic role in sensory processing has shifted to the olfactory bulb or olfactory cortex. With this in mind, we set out to ask whether the thalamus at all plays a significant functional role in human olfaction. We tested olfactory function in 17 patients with unilateral focal thalamic lesions and in age-matched healthy controls. We found that thalamic lesions did not significantly influence olfactory detection but significantly impaired olfactory identification, and only right lesions altered olfactory hedonics by reducing the pleasantness of pleasant odors. An auditory control revealed that this shift in pleasantness was olfactory specific. These olfactory impairments were evident in explicit measures of perception, as well as in patterns of sniffing. Whereas healthy subjects modulated their sniffs in accordance with odorant content, thalamic patients did not. We conclude that, although the thalamus is not in the path of olfactory information from periphery to cortex, it nevertheless plays a significant functional role in human olfaction.

show abstract

“…Others have demonstrated that auditory perception shares the same neural substrates as musical imagery (Kraemer, Macrae, Green, & Kelley, 2005;Tinti, Cornoldi, & Marschark, 1997;Zatorre, Halpern, Perry, Meyer, & Evans, 1996). Similar results have been reported for Olfactory Imagery (Bensafi, et aL, 2003;Bensafi, Sobel, & Khan, 2007;Kosslyn, 2003;Stevenson & Case, 2005), and Tactile Imagery (Yoo, Freeman, McCarthy, & Jolesz, 2003). Reports on gustatory imagery are similar but inconclusive due to the extensive and interconnected nature of gustatory processing (Jones, Fontanini, & Katz, 2006;Kobayashi, et aL, 2004).…”

Section: Motor Imagerysupporting

confidence: 62%

Motor observation, motor performance, and motor imagery : an ERP study.

Brian¹

View full text Add to dashboard Cite

Hedonic-Specific Activity in Piriform Cortex During Odor Imagery Mimics That During Odor Perception

Abstract: Bensafi M, Sobel N, Khan RM. Hedonic-specific activity in piriform cortex during odor imagery mimics that during odor perception.

Cited by 135 publications

References 60 publications

An Exception to Mental Simulation: No Evidence for Embodied Odor Language

An Exception to Mental Simulation: No Evidence for Embodied Odor Language

Spared and Impaired Olfactory Abilities after Thalamic Lesions

Motor observation, motor performance, and motor imagery : an ERP study.

Contact Info

Product

Resources

About