# OSX: registering responses from FORP **URL:** \ **Category:** Uncategorized\ **Created:** [June 18, 2005, 8:09am UTC](https://psychtoolbox.discourse.group/t/osx-registering-responses-from-forp/968 "2005-06-18T08:09:53Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\ **Post date:** [June 18, 2005, 8:09am UTC](https://psychtoolbox.discourse.group/t/osx-registering-responses-from-forp/968/1 "2005-06-18T08:09:53Z")
Hello all, I am using the FORP (fiber optic response pad) produced by Current Designs to collect responses during fMRI experiments on a G4 tower. I use the USB output and the "standard setting", in which the FORP appears to the Mac as a second keyboard, and each FORP button press is registered as a keyboard button press. I never had any problems with this device using Psychtoolbox for OS9. Under OS9, I used kbCheck to collect the responses from the FORP keys and to register scanner TTL pulses (which also appear as a keyboard input). I have recently begun using the OSX version of Psychtoolbox. Now I am using PsychHID('KbCheck', device number) to collect responses. In my code, this works fine for the keyboard and for a USB numeric keypad, but not for the FORP. I can verify that Psychtoolbox detects the FORP by typing PsychHID('Devices'). When I press the keys on the FORP, they register as the correct keystrokes in the Matlab command window or in a text editor window. However, PsychHID('KbCheck', device number) or, for that matter, KbCheck, do not register inputs from the response box. Does anyone have any suggestions to make KbCheck recognize FORP inputs? Thank you very much. Cheers, Michael Silver -------------------------------------------------------------- Michael Silver Postdoctoral Fellow, D'Esposito Laboratory 132 Barker Hall, #3190 Helen Wills Neuroscience Institute University of California, Berkeley Berkeley, CA 94720-3190 TEL: (510) 642-2839 FAX: (510) 642-3192 ---
**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\ **Post date:** [September 27, 2006, 1:37pm UTC](https://psychtoolbox.discourse.group/t/osx-registering-responses-from-forp/968/2 "2006-09-27T13:37:09Z")
I would sure like to know the answer to this also. I have to hit the button about 5 times for KbWait to register my response from a fiber optic response pad. and then don't get all the responses from KbCheck. I didn't get far enough to check if the scanner pulses register. also, once I have the usb cable connected to my mac, the keyboard responses no longer register. I am using the beta versioin for osx. Stephanie > --- In [psychtoolbox@yahoogroups.com](mailto:psychtoolbox@yahoogroups.com), Michael Silver \ wrote: > \> > \> Hello all, > \> I am using the FORP (fiber optic response pad) produced by Current Designs > \> to collect responses during fMRI experiments on a G4 tower. I use the USB > \> output and the "standard setting", in which the FORP appears to the Mac as > \> a second keyboard, and each FORP button press is registered as a keyboard > \> button press. I never had any problems with this device using Psychtoolbox > \> for OS9. Under OS9, I used kbCheck to collect the responses from the FORP > \> keys and to register scanner TTL pulses (which also appear as a keyboard > \> input). I have recently begun using the OSX version of Psychtoolbox. Now I > \> am using PsychHID('KbCheck', device number) to collect responses. In my > \> code, this works fine for the keyboard and for a USB numeric keypad, but > \> not for the FORP. I can verify that Psychtoolbox detects the FORP by typing > \> PsychHID('Devices'). When I press the keys on the FORP, they register as > \> the correct keystrokes in the Matlab command window or in a text editor > \> window. However, PsychHID('KbCheck', device number) or, for that matter, > \> KbCheck, do not register inputs from the response box. Does anyone have any > \> suggestions to make KbCheck recognize FORP inputs? Thank you very much. > \> > \> Cheers, > \> Michael Silver > \> > \> -------------------------------------------------------------- > \> Michael Silver > \> Postdoctoral Fellow, D'Esposito Laboratory > \> 132 Barker Hall, #3190 > \> Helen Wills Neuroscience Institute > \> University of California, Berkeley > \> Berkeley, CA 94720-3190 > \> TEL: (510) 642-2839 > \> FAX: (510) 642-3192 > \>