1. Developing an Intelligent Olfactometer For a Psychological Study Chaiyapoj Netsiri Rice University, Houston, TX Khokiat Kengskool Florida International University, Miami, FL

2. Agenda Background System design Hardware Software Conclusion

3. Old-fashioned olfaction lab Chen, D., et al. Percep. Motor Skills. 2000 Smell specimens

4. One of the three smells is different. Smell1Smell3Smell2 Which smell is different? Problem: The experiment can be labor intensive and prone to error.

5. Olfactometer system design Smell1 is being presented. Keyboard Display Monitor Interfacing and Solenoid Valve Controller Air and Smell Delivery System Olfactometer To subject

6. Air and smell delivery system Manifold Solenoid Valve 1 Manifold Solenoid Valve 2 Air Pump 3-way Solenoid Valve Odor Saturator Bottles To Subject

7. Hardware configuration Bottles Solinoid valves Interfacing

8. Software flowchart Smell 1? Show instruction Start Open Solenoid valve1 Yes No Smell 2? Smell 3? Repeat? Yes No Next task

9. Software flowchart (E-Prime)

10. Output data

11. Conclusion Computer controlled olfactometer can reduce labor and human error of experimenter. The subject can perform the given task with his/her own pace. Data is automatically recorded for further analysis. The software provides intelligent interactions. The system is inexpensive and easy to build.