understanding the nature of autism: behavior and brain science
TRANSCRIPT
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“Understanding the Nature of Autism:
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
Understanding the Nature of Autism:Behavior and Brain Science
Featuring
Dr. Travis Thompson
Dr. Anastasia Dimitropoulos
Moderator: Steve Peterson
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
The Fine Print• All information in this webinar and related material isprovided for informational purposes only
• Observations and recommendations represent the expertopinions of the presenters based on their knowledge,experience, and training, but are in no way meant tosubstitute for the advice of a medical practitioner or otherprofessional
• You should consult with a health professional or otherspecialist if you are interested in more information
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
Today’s Presentation• Insights into why children with autism do the things theydo
• An explanation of what the brain tells us about facerecognition in children with autism
• A look at children’s need for predictability and control oftheir environment and how you can use that knowledge tohelp build trust out of potentially stressful situations
• Answers to your questions about autism, behavior, andbrain science
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
Today’s SpeakersTravis Thompson, Ph.D. is the author of the newbook Making Sense of Autism. He is supervisingpsychologist at the Minnesota Early AutismProject and a professor in the Department ofPediatrics at the University of Minnesota School ofMedicine. He has received The Arc USADistinguished Research Award, the Academy onMental Retardation Life Time Research Award, theDon Hake Award of the American PsychologicalAssociation, and the Edgar A. Doll Award for hiscontributions to facilitating the transfer ofresearch on intellectual and developmentaldisabilities into practice. Dr. Thompson has agrandson with an autism spectrum disorder.
Anastasia Dimitropoulos, Ph.D. is a neuroimagingspecialist and an assistant professor in theDepartment of Psychology at Case WesternReserve University in Cleveland.
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Understandingthe Nature of Autism:Behavior andBrain Science
Travis Thompson, Ph.D.ProfessorDept of PediatricsUniversity of MinnesotaSchool of Medicine
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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We Will Discuss:
• Why Children with ASDs Do the Things TheyDo
• Characteristics of Autism: The Core Deficits• Lack of Understanding of, and Skill with
Communication• Brain Basis of Social Deficits• Compulsivity: Brain Differences in ASDs
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Why Do Children with ASDs Dothe Things They Do?
• It helps to try to see the world through theireyes
• They are doing the best they can to makesense of a disorderly world that causes themfrequent distress
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Characteristics of Autism:The Core Deficits
• Communication Deficit• Social Deficit• Compulsive Disorder:
Fixed Interests &Repetitive Behavior
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Deficit in Communicationas Problem Solving Tool
• Fail to grasp the idea that communication is aproblem solving tool
• Slow language processing: Poor synchronizationacross brain’s language areas
• Difficulty with pragmatics
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Fail to Understand Social Cues
• Don’t look at people’s eyes, as early as 6months of age
• Lack amygdala and prefrontal cortexactivation to faces exhibiting emotions
• Little response of fusiform gyrus to faces• Mirror neuron deficits - inability to understand
gestures• Unable to draw social inferences
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Eye and FacialProcessing Deficits
• As early as 6 months,children who arelater diagnosed withan ASD fail to look ateyes
• There is little or noamygdala (greenspheres) andprefrontal cortexactivation to eyes
Understanding the Nature of Autism: Behavior and BrainScience April 18, 2007 Copyright © 2007 Travis Thompson. All rights reserved.
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Fusiform Gyrusand Mirror NeuronDysfunction• Fusiform “face area”
under temporal lobedoes not activateto faces
• Mirror neuron systemrequired forunderstandinggestures isdysfunctional
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007 Copyright © 2007 Travis Thompson. All rights reserved.
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
Questions?How to Ask a Question:
• You can type in questions throughout the webinar.
• To type your question, find the Question & Answer area ofthe control panel to the right side of your screen, then typeyour question and click the Send button.
• Don’t worry about your typing—your questions will notbe viewed by other attendees. We will monitor yourquestions throughout the presentation and address asmany as we can during the Q&A session at the end.
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
Anastasia Dimitropoulos, Ph.D.Dr. Dimitropoulos’s primary research interests are inunderstanding
• why people who have the same genetic developmentaldisorder have many of the same behavioralcharacteristics
• why some characteristics vary within a population, and
• what neurobiological mechanisms account for thesebehaviors
Most of her work is directed at understanding behavioralcharacteristics of individuals with Prader-Willi syndrome(PWS). Evidence suggests that some people with PWShave repetitive behavior and social deficits reminiscentof autism spectrum disorders, so her recent work hasincluded examination of similarities between PWS andASD.
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Understanding FaceRecognition inAutism: Clues fromthe Fusiform Gyrus
Anastasia Dimitropoulos, Ph.D.Assistant ProfessorDepartment of PsychologyCase Western Reserve University
Underside of Actual Brain
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Face Recognition
• Face recognition is animportant function insocial animals
• In humans, faceperception is uniquelyassociated withactivity in thefusiform face area(FFA) located in thefusiform gyrus in thelower part of thetemporal lobes. Cross Section MRI Slice of Fusiform Gyrus
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Are these the SAME or aDIFFERENT person?
Are these the SAMEor a DIFFERENTobject?
Activating the Fusiform Face Area
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Schultz et al. (2000). Archives of General Psychiatry
When comparing faces toobjects, individuals withautism show less brainactivation in the FFA thanthose without autism (areainside green rectangle).
Typically Developing
Autism
The Fusiform Face Area
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Reduced Activation of the “Fusiform Face Area”
• Schultz et al. (2000)• Critchley et al (2000)• Bookheimer et al (2000)• Pierce et al (2001)• Dierks et al (2001)• Schultz et al (2004)
This has become the most widely reproduced neuroimaging finding in autism research.
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Expertise Modelof Fusiform Face Area Effectsin Autism Spectrum Disorders
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Are faces special?Are faces special?
• People can often recognize objects regardless oforientation, but upside-down faces are much moredifficult to recognize
• People with expert knowledge of non-face objects(e.g. dogs) are good at recognizing upright items butnot upside-down ones
• Recent research has examined what exactly drivesthis area’s activation
– This research suggests that not just faceprocessing but rather people’s expertise (i.e.experience) with faces underlies this activation
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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The Role of Perceptual Expertise in FG Engagement
Gauthier et al., (1999, 2000) Nature Neuroscience
Car & bird experts showed >FFA activationFFA correlated with degree ofexpertise
Greebles - Novel objects that have commonelements but are individually distinct.Novices were trained to be expert atrecognizing Greebles
Experience discriminating Greebles > FFAFFA is correlated with degree of expertise
Greebles
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Developmental Hypothesis of Autism
• Early experience with faces shapes visual cortex• Diminished social interest in children with autism:
− leads to lessened attention to people (faces) during critical early developmental periods
− failure to develop expertise for faces
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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The Baby’s Early Visual Environment
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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What the Baby Normally Sees
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Predicting Severity of Social Deficit fromAmount of FFA Activation
during Face Perception Tasks
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Fusiform Face Area Activity to FacesPredicts Actual Face Recognition
r = .59, p = .0001 (N = 47 )*
* r = .50, p = .0005 w/o outlier
The more the fusiform face area activates when looking atfaces, the better at actually recognizing people’s faces
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Fusiform Face Area Activity to Faces PredictsSeverity of Social Disability Across Diagnoses
• Research also indicates that the more socialdeficits individuals with an autism spectrumdisorder have, the less the Fusiform Face Areawill activate
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Implications
Lack of Fusiform Face Area activation is directlyproportional to degree of impairment and therefore:
• Fusiform gyrus function is a good target outcomevariable for a treatment study
Moreover, fMRI studies so far are merely correlational• Early intervention studies focusing on facial
recognition training studies may provide anexperimental manipulation of behavior skills, totest the causal relationships between faceperceptual skills, social skills and FFA activity
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Let’s FACE it! Research Program atthe Yale Child Study Center
http://info.med.yale.edu/chldstdy/neuroimg/current_projects.htm
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Anastasia Dimitropoulos. All rights reserved.
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
Questions?How to Ask a Question:
• You can type in questions throughout the webinar.
• To type your question, find the Question & Answer area ofthe control panel to the right side of your screen, type yourquestion, then click the Send button.
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Fixed Interests & Repetitive Behavior
“The child’s behavior is governed byan anxiously obsessive desire forsameness that nobody but the childhimself may disrupt on rareoccasions. Changes in routine, offurniture arrangement, of apattern, or the order in whicheveryday acts are carried out, candrive him to despair.”
Leo Kanner, 1943
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Preference for Things
• Preference for objects that areconstant…predictable
• People are continually changing, producingambivalence
• Adults’ predictability and willingness tointervene to reduce distressful situationstranslate into trust
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Making the World More Predictable
• Use visual schedules• Give a warning before there will be a change in
routine• If possible, give the child a say in which things
are done in what order
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Visual Schedule
2 + 1 = 3
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Need for Control: #1 Dilemmaof Children with ASDs
• Most children with ASDssuffer from ObsessiveCompulsive Disorder tosome degree
• They’re doing the bestthey can to make theirworld understandable,predictable, and tolerable
• Our job is to help themmake their world moremanageable
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Gain Control by Relinquishing Control• Teach legitimate means of
requesting control over thingsimportant to the child butnot very important to caregivers
• Choices - Mother: “Would like likeapple sauce or pudding for dessert?”
• Child: “No! I don’t want to dospelling!” Teacher: “OK, let’sfinish coloring, then we’ll doyour spelling.”
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Epilogue: The Little Strangerin Our Midst
• Teachers and parents look at achild with autism and see a littlestranger in their midst. Whatmakes him so different?
• A child with an ASD is doing theirbest to make their worldunderstandable and tolerable.
• It’s up to us to help them. Weusually can do so if we see theworld from their vantage pointand apply sound basicintervention practices.
Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Travis Thompson. All rights reserved.
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
Making Sense of Autism
Learn much more about thetopics discussed in today’swebinar in Dr. Thompson’snew book Making Sense ofAutism—the authoritativeguide for non-experts.
For more information, go towww.brookespublishing.com.
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Understanding the Nature of Autism: Behavior and Brain Science April 18, 2007Copyright © 2007 Paul H. Brookes Publishing Co. All rights reserved.
Thank You for Attending!• Check your e-mail in the next day or two for a link to arecording of this webinar that you can access any time
• You can find a copy of today’s slides atwww.brookespublishing.com/autism
• If you would like to receive an e-mail confirming yourattendance at today’s webinar, please send a request [email protected]
• Check www.brookespublishing.com/autism in about aweek for a written copy of today’s Q&A along with anyquestions we were unable to get to