Amygdala responses to averted vs direct gaze fear vary as a function of presentation speed

Autor: Kestutis Kveraga, Robert G. Franklin, Nalini Ambady, Anthony J. Nelson, Reginald B. Adams, Paul J. Whalen, Robert E. Kleck, Nouchine Hadjikhani
Rok vydání: 2011
Předmět:
Male
Emotions
Anxiety
Audiology
Attentional bias
Attentional Bias
0302 clinical medicine
Face Perception
Escape Reaction
Face perception
Image Processing
Computer-Assisted
Emotional expression
fMRI
05 social sciences
Fear
General Medicine
Amygdala
Neural Systems
Magnetic Resonance Imaging
Eye Gaze
Facial Expression
medicine.anatomical_structure
Female
Psychology
Cognitive psychology
Adult
medicine.medical_specialty
Adolescent
Emotional Expression
Cognitive Neuroscience
threat perception
Prefrontal Cortex
Experimental and Cognitive Psychology
Context (language use)
Fixation
Ocular
050105 experimental psychology
Young Adult
03 medical and health sciences
medicine
Facial Expressions
Humans
0501 psychology and cognitive sciences
Signal
Generalized Social Phobia
Facial expression
Original Articles
Gaze
fear expression
Oxygen
Fixation (visual)
Photic Stimulation
030217 neurology & neurosurgery
Zdroj: Social cognitive and affective neuroscience
DOI: 10.1093/scan/nsr038
Popis: We examined whether amygdala responses to rapidly presented fear expressions are preferentially tuned to averted vs direct gaze fear and conversely whether responses to more sustained presentations are preferentially tuned to direct vs averted gaze fear. We conducted three functional magnetic resonance imaging (fMRI) studies to test these predictions including: Study 1: a block design employing sustained presentations (1 s) of averted vs direct gaze fear expressions taken from the Pictures of Facial Affect; Study 2: a block design employing rapid presentations (300 ms) of these same stimuli and Study 3: a direct replication of these studies in the context of a single experiment using stimuli selected from the NimStim Emotional Face Stimuli. Together, these studies provide evidence consistent with an early, reflexive amygdala response tuned to clear threat and a later reflective response tuned to ambiguous threat.
Databáze: OpenAIRE
Externí odkaz: