Accession Number : ADA519116


Title :   An FMRI Study of Olfactory Cues to Perception of Conspecific Stress


Descriptive Note : Final rept. Sep 2006-May 2008


Corporate Author : STATE UNIV OF NEW YORK AT STONY BROOK


Personal Author(s) : Mujica-Parodi, Lilianne R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a519116.pdf


Report Date : Apr 2010


Pagination or Media Count : 36


Abstract : Alarm substances are airborne chemical signals, released by an individual into the environment, which communicate emotional stress between conspecifics. Here it is tested whether humans, like other mammals, are able to detect emotional stress in others by chemosensory cues. Sweat samples collected from individuals undergoing an acute emotional stressor, with exercise as a control, were pooled and presented to a separate group of participants (blind to condition) during four experiments. In an fMRI experiment and its replication, it was found that scanned participants showed amygdala activation in response to samples obtained from donors undergoing an emotional, but not physical, stressor. An odor-discrimination experiment suggested the effect was primarily due to emotional, and not odor, differences between the two stimuli. A fourth experiment investigated behavioral effects, demonstrating that stress samples sharpened emotion-perception of ambiguous facial stimuli. Together, these findings suggest human chemosensory signaling of emotional stress, with neurobiological and behavioral effects.


Descriptors :   *STRESS(PHYSIOLOGY) , *OLFACTOMETERS , *PERCEPTION(PSYCHOLOGY) , *MAGNETIC RESONANCE IMAGING , *CUES(STIMULI) , RESPONSE(BIOLOGY) , NEUROPHYSIOLOGY , ANXIETY , EMOTIONS , PERSPIRATION , CORTISOL , NEUROBIOLOGY , ODORS , PHEROMONES , STIMULI , FEAR , SIGNS AND SYMPTOMS , AIRBORNE , PERFORMANCE(HUMAN) , CHEMICALS


Subject Categories : Medicine and Medical Research
      Medical Facilities, Equipment and Supplies


Distribution Statement : APPROVED FOR PUBLIC RELEASE