1. Understanding the Brain’s Electrical Activity by Means of the DESA ® ®Copyright 2005 Yellen & Associates. All rights reserved.

2. What if your doctor prescribed heart medication without checking your blood pressure and pulse, performing an EKG or a cardiac ultrasound or any other objective measure?

3. The brain is the most important organ in the body, yet we gather the least amount of information about it before making therapeutic recommendations or medicating it.

4. Jake

5. Digital Electroencephalogram Spectral Analysis and Evoked Potentials

6. The DESA  The DESA was developed at Harvard’s Boston Children's Hospital.  The DESA objectively evaluates 6 neuroelectrical functions in real time: EEG, VER, AER, FMAER, P300 & Coherence utilizing a 32 electrode cap.  Compares all functions to a 15,000 person database.  Results are interpreted by a neurologist.  Provides a visual S-D comparison (Spectral Analysis).

7. EEG (QEEG) A measurement of the background brainwaves including Alpha, Beta, Theta and Delta

8. EEG Abnormal Spike Activity Left Temporal Spike & Poly Spike

9. EEGEEG Abnormal Normal

10. Visual Evoked Response VER A measurement of the brain’s processing of visual stimuli

11. VER Yellen/Schweller Effect NORMAL Early hyperreactivity followed by delayed visual response

12. Auditory Evoked Response AER A measurement of the brain’s processing of auditory stimuli

13. AER NormalAbnormal

14. Frequency Modulated Auditory Evoked Response FMAER A measurement of the brain’s processing of language frequency stimuli

15. FMAERFMAER NormalAbnormal Absent FMAER on Second Trial

16. P300P300 A measurement of the brain’s processing of auditory working memory, e.g. the brain’s recognition of sound change

17. P300 Abnormal Normal

18. CoherenceCoherence The synchronicity of brain region functioning

19. CoherenceCoherence Normal Abnormal

20. Sleep Waves

21. Applications of the Data 1.Validate diagnostic hypotheses; 2.Identify undetected brain abnormalities; 3.Cross-validate learning disabilities including ADHD; 4.Cross-validate auditory and/or visual processing deficits; 5.Provide bases for intervention in psychotherapy, educational therapy and speech and language therapy; and 6.Provide bases for pharmacological interventions.

22. SummarySummary A good, comprehensive neuroelectrical study must include evaluations of the EEG, VER, AER, FMAER, P300 and Coherence functions of the brain.

23. ConclusionConclusion Information without comparison to normative database does not produce objective data with which to map out interventions.

24. ResourcesResources  Yellen & Associates: http://www.yellenandassociates.com  Irlen Syndrome: http://www.irlen.com  What Are Auditory Evoked Potentials?: http://www.audiospeech.ubc.ca/haplab/aep.htm  What is the Function of the Various Brain Waves?: http://brain.web-us.com/brainwavesfunctions.htm

25. Yellen & Associates psychological, educational, speech and language services 11260 Wilbur Ave., Suite 303 Northridge, CA 91344 (818) 360-3078 **** (805) 494-4086 http://www.yellenandassociates.com ®Copyright 2005 Yellen & Associates. All rights reserved.