2.3.2.4 Get Timed Key Response (#C)

The Get Timed Key Response pauses Cogsys until the subject presses a key, or until a specified time limit is reached. If no character is pressed within a given time limit, '&' is recorded as the key pressed, and Cogsys procedes processing the testlist. Either way, the Cogsys response key and response time variables are updated.

If the "@" key is pressed before the time limit has expired, the experiment is terminated.

Name:

Get Timed Key Response

Class:

Direct Keyboard Input

Code:

#C

Syntax:

#Climit

limit is a timelimit

System:

Cogsys variable 7 is updated with the key pressed, or '&'. Cogsys variable 5 is updated with the reaction time, or the timelimit.

Output:

The key pressed and time are written to output. If the timelimit limit is reached before a key is pressed, '&' is written as the key pressed, and limit as the time.

Breakout:

YES

Test Files:

TKYR_T01.IN: Tests basic operation

@C Testing the Timed Key Response \#C command. #W3000 Press the 'z' key.#C10000 You pressed the '$SV7' key after $SV5 milliseconds. #W3000 This has been an illustration of the \#C command, using \#C10000 to timeout after 10 seconds of no keyboard input. #W5000 Now press the 'z' key after waiting 5 seconds.#C3000 The '$SV7' key was sent to output after $SV5 milliseconds. This has been an illustration of the \#C command, using \#C3000 to timeout after 3 seconds of no keyboard input. #W4000 Done. Press any key to exit.#R

Examples:

input

Press a key within 5 seconds: #C5000

cogsys

Displays the text and waits up to 5 seconds.

subject

Press the `z' key after 200 milliseconds.

output

z200

input

Press a key within 5 seconds: #C5000

cogsys

Displays the text and waits up to 5 seconds.

subject

Does nothing.

output

&5000