Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
51 participants
OBSERVATIONAL
2014-04-19
2017-06-16
Brief Summary
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Keywords: Autism Spectrum Disorder; amygdala reactivity; emotional processing; fMRI
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Detailed Description
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Conditions
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Study Design
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CASE_CONTROL
CROSS_SECTIONAL
Study Groups
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ASD group
There is no intervention to be administered in this study. Here, this fMRI study used the backwardly masked paradigm to elucidate how perceiving emotional expressions affects amygdala engagement and its related functional connectivity across two participant groups: ASD with and controls. All ASD participants were diagnosed using the Diagnostic and Statistical Manual of Mental Disorders 5th Edition's (DSM-5) diagnostic criteria (APA, 2013) and confirmed by clinical consensus. ASD individuals were recruited from a community autism program and referred to children's health doctors and child psychiatrists. Exclusion criteria for all participants were neurological abnormalities, a history of epilepsy or seizures, head trauma and IQ \<75. The subjects did not participate in any intervention or drug programs during the experimental period.
No interventions assigned to this group
Control group
There is no intervention to be administered in this study. Here, this fMRI study used the backwardly masked paradigm to elucidate how perceiving emotional expressions affects amygdala engagement and its related functional connectivity across two participant groups: ASD with and controls. The participants in the age- and sex-matched control group were recruited from the local community, and screened for major psychiatric illnesses by conducting structured interviews.
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
* IQ \> 75
Exclusion Criteria
* A history of epilepsy or seizures, head trauma a
* IQ \<75
13 Years
40 Years
ALL
Yes
Sponsors
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Yawei Cheng
OTHER
Responsible Party
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Yawei Cheng
Professor
References
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Liddell BJ, Williams LM, Rathjen J, Shevrin H, Gordon E. A temporal dissociation of subliminal versus supraliminal fear perception: an event-related potential study. J Cogn Neurosci. 2004 Apr;16(3):479-86. doi: 10.1162/089892904322926809.
Williams LM, Kemp AH, Felmingham K, Liddell BJ, Palmer DM, Bryant RA. Neural biases to covert and overt signals of fear: dissociation by trait anxiety and depression. J Cogn Neurosci. 2007 Oct;19(10):1595-608. doi: 10.1162/jocn.2007.19.10.1595.
Schumann CM, Amaral DG. Stereological analysis of amygdala neuron number in autism. J Neurosci. 2006 Jul 19;26(29):7674-9. doi: 10.1523/JNEUROSCI.1285-06.2006.
Eimer M, Kiss M, Holmes A. Links between rapid ERP responses to fearful faces and conscious awareness. J Neuropsychol. 2008 Mar;2(Pt 1):165-81. doi: 10.1348/174866407X245411.
Hall GB, Doyle KA, Goldberg J, West D, Szatmari P. Amygdala engagement in response to subthreshold presentations of anxious face stimuli in adults with autism spectrum disorders: preliminary insights. PLoS One. 2010 May 25;5(5):e10804. doi: 10.1371/journal.pone.0010804.
Other Identifiers
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YM102035
Identifier Type: -
Identifier Source: org_study_id
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