| modality |
One of the following values:
| keyboard |
Responses are defined as key-presses on the computer’s keyboard. |
| mouse |
Responses are defined as mouse clicks on target stimuli, by clicking a particular button or moving the mouse in a particular direction. |
| mousekey |
Same as mouse except that the mouse cursor is not visible. |
| touchscreen |
Responses are defined as touching a target stimulus presented on a monitor equipped with a touchscreen system. |
| voice |
Responses are defined as vocalizations into a microphone connected to the sound card. |
| joystick |
Responses are defined as a joystick action. Joystick support is limited to Windows 98, ME, and XP only. |
| com<n> |
Responses are defined as a serial port signal, where n specifies the port number (e.g., COM1, COM2, COM3, ...). |
| xid<n> |
Responses are defined as a XID protocol signal from a Cedrus Response Box on the serial port, where n specifies the port number (e.g., XID1, XID2, XID3, ...). |
| lpt<n> |
Responses are defined as a parallel port signal, where n specifies the port number (e.g., LPT1, LPT2, LPT3, ...). |
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