Semantic context‐dependent neural representations of odors in the human piriform cortex revealed by 7T MRI

T Okumura, I Kida, A Yokoi, T Nakai… - Human Brain …, 2024 - Wiley Online Library
Olfactory perception depends not only on olfactory inputs but also on semantic context.
Although multi‐voxel activity patterns of the piriform cortex, a part of the primary olfactory …

[HTML][HTML] Odor identity can be extracted from the reciprocal connectivity between olfactory bulb and piriform cortex in humans

B Iravani, A Arshamian, M Lundqvist, LM Kay… - Neuroimage, 2021 - Elsevier
Neuronal oscillations route external and internal information across brain regions. In the
olfactory system, the two central nodes—the olfactory bulb (OB) and the piriform cortex (PC) …

Functional heterogeneity in human olfactory cortex: an event-related functional magnetic resonance imaging study

JA Gottfried, R Deichmann, JS Winston… - Journal of …, 2002 - Soc Neuroscience
Studies of patients with focal brain injury indicate that smell perception involves caudal
orbitofrontal and medial temporal cortices, but a more precise functional organization has …

Hedonic-specific activity in piriform cortex during odor imagery mimics that during odor perception

M Bensafi, N Sobel, RM Khan - Journal of Neurophysiology, 2007 - journals.physiology.org
Although it is known that visual imagery is accompanied by activity in visual cortical areas,
including primary visual cortex, whether olfactory imagery exists remains controversial. Here …

Multisensory enhancement of odor object processing in primary olfactory cortex

DK Porada, C Regenbogen, J Seubert, J Freiherr… - Neuroscience, 2019 - Elsevier
Identification of an object based on its odor alone is inherently difficult, but becomes easier
when other senses provide supporting cues. This suggests that crossmodal sensory input …

Piriform cortex takes sides: temporally-segregated odor representations from ipsilateral and contralateral nostrils within a single sniff

GN Dikecligil, AI Yang, N Sanghani, T Lucas, HI Chen… - bioRxiv, 2023 - biorxiv.org
The human olfactory system has two discrete channels of sensory input, arising from
olfactory epithelia housed in the left and right nostrils. Here, we asked whether primary …

Odor representations from the two nostrils are temporally segregated in human piriform cortex

GN Dikeçligil, AI Yang, N Sanghani, T Lucas, HI Chen… - Current Biology, 2023 - cell.com
The human olfactory system has two discrete channels of sensory input, arising from
olfactory epithelia housed in the left and right nostrils. Here, we asked whether the primary …

Strategies for odor coding in the piriform cortex

JH Brann, SR Saideman, MT Valley… - Journal of …, 2007 - Soc Neuroscience
What we perceive in the olfactory world is different from what odor molecules are in the air.
With hundreds or even thousands of aerosolized molecules present in any single …

Connectivity of the amygdala, piriform, and orbitofrontal cortex during olfactory stimulation: a functional MRI study

A Nigri, S Ferraro, L D'Incerti, HD Critchley… - …, 2013 - journals.lww.com
The majority of existing functional MRI studies on olfactory perception have addressed the
relationship between stimulus features and the intensity of activity in separate regions …

High-precision mapping reveals the structure of odor coding in the human brain

V Sagar, LK Shanahan, CM Zelano, JA Gottfried… - Nature …, 2023 - nature.com
Odor perception is inherently subjective. Previous work has shown that odorous molecules
evoke distributed activity patterns in olfactory cortices, but how these patterns map on to …