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EKG Sampling Script John Thornton Brian Walden. What does it do? The psych lab in the science center runs experiments that sample the amplitude of brain.

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Presentation on theme: "EKG Sampling Script John Thornton Brian Walden. What does it do? The psych lab in the science center runs experiments that sample the amplitude of brain."— Presentation transcript:

1 EKG Sampling Script John Thornton Brian Walden

2 What does it do? The psych lab in the science center runs experiments that sample the amplitude of brain waves of subjects in the experiments Our program utilizes pre-existing code to allow the user to write a script which allows them to run multiple samples consecutively on the EKG detection device in the psych lab

3 Scripting Language Template test1 sec 150 hz 100 chan 0-14 write test1a.txt ; Template test2 sec 30 hz 200 chan write test2a.txt ; Template test3 min 1 hz 50 chan 0-29 write test3a.txt ; Run test1 ; Run test2 ; Run test1 min 2 write test1b.txt ; Run test2 min 1 write test2b.txt ; Run test1 sec 90 write test1c.txt ; Run test2 sec 90 write test2c txt ; Run test3 ; Run test3 hz 100 chan 0-14 append test3a.txt ; Run test 3 sec 45 hz 150 chan 0-14 append test3a.txt ; Sample Script

4 Scripting Language Template min||sec hz||perMin chan i*[ write||append ] ; i is an element of {1,2,3,4,5,6,7,8,9,10} and are strings of characters and are integers is a list of ints separated by, or – ex: 3,8,11-17,21-15,29 Making a Template

5 Scripting Language Run j*[ min||sec ] j*[ hz||perMin frequency# ] j*[ chan ] (iUj)*[ write||append ] ; i is an element of {1,2,3,4,5,6,7,8,9,10} j is an element of {0,1} (iUj) is an element of {0,1,2,3,4,5,6,7,8,9,10} Running a Sample

6 Program Flow Chart Post Processor Sample runner Sample Container Sample Reader Temp Output Files Final Output Files

7 Technical Challenges Making sure rate of writing output keeps up with reading the input Keeping the time between samples as small as possible Developing a powerful scripting language that’s easy to use Developing in a fairly limited environment Understanding poorly documented code when the programmer is unavailable

8 What We Learned Smart data structures make integrating different parts of the program easy Working with non-professional code is hard Keeping documentation really helps

9 Future Improvements/Bugs Improvements – Allowing for the user to administer a stimulus – Additional post processing capabilities Bugs – Right now you can’t insert the frequency in samples per minute – Improve script reader so that errors don’t cascade


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