Near-infrared spectroscopy of orbitofrontal cortex during odorant stimulation.
Am J Rhinol Allergy
; 25(3): 163-5, 2011.
Article
em En
| MEDLINE
| ID: mdl-21679526
ABSTRACT
BACKGROUND:
For olfaction, several studies have reported near-infrared spectroscopy (NIRS) signal changes in the orbitofrontal cortex (OFC) during odor stimulation. However, the roles of human OFC in olfactory cognition are less well understood. This study was designed to better understand the roles of OFC for olfaction.METHODS:
Hemodynamic responses for phenyl ethyl alcohol or citral in the OFCs were measured with NIRS. After the experiment, participants were asked to describe the characteristics of the odor and to rate odor intensity and hedonic valence.RESULTS:
Statistical analysis of all participants' data showed significant changes in the concentration of total hemoglobin in the left OFC during the trial (p = 0.04). The total hemoglobin signal increased significantly in the right OFC (p = 0.0008) of the participants who successfully identified the odorant stimulus.CONCLUSION:
Our findings showed that NIRS combined with a questionnaire is a useful method for studying the functional neuroanatomy of OFC in terms of olfaction.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Olfato
/
Espectroscopia de Luz Próxima ao Infravermelho
/
Lobo Frontal
Tipo de estudo:
Prognostic_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
Idioma:
En
Revista:
Am J Rhinol Allergy
Assunto da revista:
ALERGIA E IMUNOLOGIA
/
OTORRINOLARINGOLOGIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Japão