**Showplay Reference Manual, Chapter 4 (StimulusEvents): Contents** 
===== Chapter 4 -- Stimulus Events =====
Showplay real-time paradigms are designed to execute a sequence of stimulus events. These events are listed in a [[[[jvs:cigal:showplay:manual:chapter1:stimulustable|Stimulus Table]] specified in a paradigm parameter file ([[[[jvs:cigal:showplay:manual:chapter1:ppf|PPF]]). In the stimulus table, the first column specifies the stimulus type (usually a character string) and the remaining columns specify the timing and other control arguments for that stimulus.

There are 3 categories of stimulus events: Stimulus Files, Text strings, Event Commands. The following list summarizes all 3 types (click a link for details): 
|**Stimulus Files**| |
|[[jvs:cigal:showplay:manual:chapter4:file_avi|file.avi]]|Display a video  |
|[[jvs:cigal:showplay:manual:chapter4:file_pcx|file.pcx]]|Display a PCX format image  |
|[[jvs:cigal:showplay:manual:chapter4:file_jpeg|file.jpg]]|Display a JPEG format image  |
|[[jvs:cigal:showplay:manual:chapter4:file_wav|file.wav]]|Play a sound  |
|**Text Strings**| |
|[[jvs:cigal:showplay:manual:chapter4:textstring|"text"]]|Display a text string  |
|**Event Commands**| |
|[[jvs:cigal:showplay:manual:chapter4:backcolor|backcolor]]|Change the default back color  |
|[[jvs:cigal:showplay:manual:chapter4:bdraw|bdraw]]|Draw an empty box  |
|[[jvs:cigal:showplay:manual:chapter4:bfill|bfill]]|Draw a filled box  |
|[[jvs:cigal:showplay:manual:chapter4:color|color]]|Change the default front, back, and text colors  |
|[[jvs:cigal:showplay:manual:chapter4:edraw|edraw]]|Draw an empty ellipse (or circle)  |
|[[jvs:cigal:showplay:manual:chapter4:efill|efill]]|Draw a filled ellipse (or circle)  |
|[[jvs:cigal:showplay:manual:chapter4:erase|erase]]|Erase the screen (set to back color)  |
|[[jvs:cigal:showplay:manual:chapter4:fix|fix]]|Display a fixation cross  |
|[[jvs:cigal:showplay:manual:chapter4:font|font]]|Change the default text font  |
|[[jvs:cigal:showplay:manual:chapter4:forecolor|forecolor]]|Change the default graphics color  |
|[[jvs:cigal:showplay:manual:chapter4:line|line]]|Draw a line  |
|[[jvs:cigal:showplay:manual:chapter4:meter|meter]]|Draw a real-time response meter |
|[[jvs:cigal:showplay:manual:chapter4:owait|owait]]|Wait for an operator response|
|[[jvs:cigal:showplay:manual:chapter4:quit|quit]]|Exit the paradigm  |
|[[jvs:cigal:showplay:manual:chapter4:reset|reset]]|Reset the time base  |
|[[jvs:cigal:showplay:manual:chapter4:rwait|rwait]]|Wait for a subject response  |
|[[jvs:cigal:showplay:manual:chapter4:textcolor|textcolor]]|Change the default text color  |
|[[jvs:cigal:showplay:manual:chapter4:twait|twait]]|Wait for a trigger  |
|[[jvs:cigal:showplay:manual:chapter4:user1|user1]]|User defined stimulus 1  |
|[[jvs:cigal:showplay:manual:chapter4:user2|user2]]|User defined stimulus 2  |
|[[jvs:cigal:showplay:manual:chapter4:user3|user3]]|User defined stimulus 3  |
|[[jvs:cigal:showplat:manual:chapter4:vwait|vwait]]|Wait for a variable value |
|[[jvs:cigal:showplay:manual:chapter4:writeport|writeport]]|Write to a communications port  |

**See Also:**\\

[[jvs:cigal|CIGAL Home]], 
[[jvs:cigal:manual|CIGAL Manual]], 
[[jvs:cigal:showplay|ShowPlay Home]], 
[[jvs:cigal:showplay:manual|ShowPlay Manual]], 
[[jvs:cigal:showplay:manual:help|Manual Help]]