2.3.2.1 Get Key Response (#R)

The Get Key Response is the classic response command. It pauses Cogsys until the subject presses a key. It then writes the key pressed and the reaction time in milliseconds to output, followed by a newline. It updates Cogsys variables 7 and 5 with the key and time, respectively.

Like most response commands, Get Key Response will terminate execution of the experiment if the "@" key is entered.

Name:

Get Key Response

Class:

Direct Keyboard Input

Code:

#R

Syntax:

#R

System:

Cogsys variable 7 (COGVAR_KEY) is updated with the key pressed. Cogsys variable 5 (COGVAR_TIME) is updated with the reaction time.

Output:

The key pressed and time are written to output.

Breakout:

YES

Test Files:

KEYR_T01.IN: Tests basic operation

@C Press the 'z' key#R You pressed the '$SV7' key after $SV5 milliseconds. $AV100=V7 $AV101=V5 #W5000 Press the capital 'Z' key#R You pressed the '$SV7' key after $SV5 milliseconds. $AV102=V7 $AV103=V5 #W2000 Press the '6' key#R You pressed the '$SV7' key after $SV5 milliseconds. $AV104=V7 $AV105=V5 #W2000 Press the 'F1' key#R You pressed the '$SV7' key after $SV5 milliseconds. $AV106=V7 $AV107=V5 The output file should have these response key and time pairs: $AV7=V100$SV7$SV101 $AV7=V102$SV7$SV103 $AV7=V104$SV7$SV105 $AV7=V106$SV7$SV107 Done. Press any key to exit.#R

Examples:

input

#R

subject

Presses the `z' key after 200 milliseconds.

output

z200