irlen syndrome & eeg - spectrum learning › nfbconference2015 › 4... · irlen dyslexia...
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Irlen Syndrome & EEGDr. Doris Ang
Psychologist / DiagnosticianIrlen Dyslexia Clinic
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Pediatric RehabilitationMedicine @ Children’s Hospital of Pittsburg
• Prevalence of childhood disability is increasing
• Disability related to physical health condition havedecreased
• Disability due to neuro-developmental & mental healthincreased greatly
• 6 millions kids with LD in 2009-2010, 1 million more thanin 2001-2002.
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Learning Disability
• People with LD are of average or above-average intelligencebut still struggle to acquire skills that impact theirperformance in school, at home, in the community and in theworkplace
• Learning disabilities are lifelong, and the sooner they arerecognized and identified, the sooner steps can be taken tocircumvent or overcome the challenges they present.
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Different Types of Learning DisabilitiesDyslexia
ADD/ADHD
Autism/Asperger’sSyndrome/PDD
Down SyndromeAuditory Processing
Disorder
Visual Processing Disorder
Sensory Integration Disorder
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Dyslexia – functional difference
• Dyslexia is a different learning ability rather thana disability (brain process information differentlyfrom a non - dyslexic)
• It is a puzzling mix of distinctive strength oftalents as well as clusters of difficulties.
• Dyslexics are no less intelligent than others.
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Interesting Facts
Film Producer Walter( Walt Disney)
Founder of Apple ComputerSteve Jobs
Physicist & Philosopher of ScienceAlbert Einstein
Chairman of London-Based Virgin Group Richard Branson
Hollywood ActorTom Cruise
Prime Minister of United KingdomWinston Churchill
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Irlen Syndrome
Irlen Syndrome is a
• Distinct type of perceptual dyslexia
• Neurological disorder – eye look, brain see
• Brain inability to encode and decode visual information
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Case Study I Razeena
• Dyslexic
• Never pass her exams sincePrimary 1
• Headache (Panadol)
• Severe light sensitivity
• Unable to see well even withprescribed lenses
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What Happens When You Have IrlenSyndrome?
• Information is transmitted from the eyes to the brain by 2 pathways- magnocell & parvocell
• Research indicates that a deficit in magno cells which results in problem accomodating specific wavelight of light
• A particular frequency of light when enter the retina, will trigger the stressor in the neural pathway resulting in sensory overload
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Deficit in Magno Cells
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Case Study IIEthan
• ASD, High EQ
• Light Sensitivity
• Headache
• Uneven handwriting
• Rub eyes frequently
• Not socializing well in school, grades affected
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Dr. Daniel Amen’s Research
Using 3D Spect Scan, he found the activity to be more balanced or normalized while wearing Irlen filters.
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Scotopic Sensitivity WithoutIrlen Lenses
Scotopic Sensitivity With IrlenLenses
SPECT Scans – Amen Clinic
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Visual Processing Disorder
• Problem understanding what they see, recognising words,judging distance, escalators, hotel carpets, words may move,lines may flow into each other, spaces between words maymerge.
• Individuals find their vision compromised under bright light.
• Average to well above average intelligence, test well orally.
• Co-exist with ADD/ADHD, Autism
• Misdiagnosis
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Irlen Syndrome• Genetic component: affecting males and females equally
• Condition is varied and intermittent
• Exists on a continuum from slight to severe
• Enhanced by environmental stressors: lighting; contrast, colors, patterns; amount of print on page; demands for continuous performance; demands for comprehension; print size, style and format
• Not identified by standardized tests
• Not a method of instruction
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Symptpms• Skip words or lines, use finger as marker
• Loses place, misread words
• Poor comprehension (too much energy)
• Poor depth perception, poor motor co-ordination, poor ball skills, avoid PE
• Slow to copy, poor penmanship, uneven slope of letters, unequal spacing
• Headache/dizziness
• Difficulty reading music lines
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A Six Year Follow-up Study
• Irlen Coloured Filters for Reading: A Six Year Follow-up by Whiting, Robinson, and Parrott in AustralianJournal of Remedial Education, 1994.
– 94% of 267 subjects reported continued improvement
– 58% reported large improvements in at least 3 areas
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Colorado Inmates & Irlen SyndromeJournal of Correctional Education, September 2000 by Whichard, J.A., Feller, & Kastner.
Improvement with Colored Overlays (N=72)
Degree Of Improvement
0%
10%
20%
30%
40%
50%
60%
none slight moderate considerable
Degree of Improvement
Of 155 randomly selected subjects, 88.9% were moderately or highly Scotopic and reported moderate to considerable improvement with an Irlen colored overlay.
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Physical Symptoms(Average Rating 0-5)
“0” means “No Problem “5” means “Considerable Problem”
Symptoms Pre Post
Light Sensitivity
Migraines
Headaches
Concentration
Tired/Fatigued/Drained
Short Term Memory Loss
Behavior Control/Anger
Easily Agitated or Irritable
Eye Strain/Pain
Slowed Thinking
Feeling Anxious
Fidgety
Dizziness
Feeling Depressed
Nausea
Stomachaches
No Problem
ConsiderableProblem
No Problem
ConsiderableProblem
4.914.884.86
4.434.414.384.334.25
4.134.043.99
3.523.29
3.172.41
1.61
0.130.49
0.411.32
1.612.57
1.571.270.19
1.461.31
1.030.361.340.220.14
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Average Number of Migraines Per Month
Pre Post
24 1
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Case Study IIISky
Case Study III
• Stressful to read
• Eyes discomfort – watery, painful
• Headache
• Skip words and lines a lot
• Rub eyes frequently
• Grades affected
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Irlen Syndrome
• It affects 12 – 14% of population
• Almost 50% of autistic population
• 33% of ADD/ADHD population
• 46% of people with specific learning disabilities and reading problems.
• 70% of Dyslexia population
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Causes & Conditions
• Pregnancy, delivery
• Environmental
• Developmental – crawling, balancing
• Genetic
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Irlen Treatment
• Permanent – treatable
• Spectrally modified color filters can correct the timing imbalance and normalize the brain pattern
• Sunglasses – color saturation is important – visual system may be adverse to certain saturation
• The correct color is vital; the wrong color can increase the blood flow to the posterior arteries of the brain and cause headaches and misprocessed information (Prof. Bardolini, Modena University, Italy).
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Irlen Treatment
• Early identification, early intervention
• Irlen Spectral Filters removes out all wavelength of light that cause visual problem.
• Visual barriers to learning has to be removed for all remedial teachings to be effective.
• Reading, learning & attention problems do not have to limit a child's POTENTIAL.
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PowerPoint Presentation ExcerptsPrepared by Georgianna Saba, July 2006 (Update 2012)
IRLEN SYNDROME
BRAIN SCANS (4 types)
MAGNETIC RESONANCE
QEEG Quantitative Electroencephalography
SPECT Single Photon Emission Computerized Tomography
EEG EVOKE POTENTIAL
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Genevieve’s EEG
• Her brain generally under-aroused with weak Alphas. When on tasks, herTheta increase significantly at all sites (subtype of ADHD)
• High Theta of 7.08Hz (4-7Hz), can slow down cognitive processing whichlead to symptoms of ADD.
• With Irlen lens, interesting to see no increase in Theta at occipital sitewhen on tasks.
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