# OSX: Saving conditions and responses **URL:** \ **Category:** Uncategorized\ **Created:** [June 23, 2005, 8:33pm UTC](https://psychtoolbox.discourse.group/t/osx-saving-conditions-and-responses/2068 "2005-06-23T20:33:46Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![Peter\_54971](https://avatars.discourse-cdn.com/v4/letter/p/f9ae1b/32.png) [@Peter\_54971](https://psychtoolbox.discourse.group/u/Peter_54971)\ **Post date:** [June 23, 2005, 8:33pm UTC](https://psychtoolbox.discourse.group/t/osx-saving-conditions-and-responses/2068/1 "2005-06-23T20:33:46Z")
Hi Folks, We have designed an experimental procedure in which several different stimuli are presented in randomized order to subjects. After each stimulus presentation, we want to wait for a subject's response. Ideally, over the experimental session we'd record each trial number, stimulus condition, and subject response (and a few other parameters). However, we've had trouble finding a set of commands that will do this correctly. Given that we're running on Mac (Matlab 7.04 and current PTB), we're limited to using fprintf (to MS Word) and/or csvwrite (to create .dat files). Does anyone out there have a snippet of code or a short example program that would achieve this kind of thing? By the way, we've also been following the threads that address KbCheck, etc. In our own experience, if we use KbWait, KbCheck, and KbName in conjunction in a loop that gathers responses, we always have to keypress n+1 times to get n responses. The first keypress isn't recorded. We would appreciate any comment or advice on either of these issues. Cheers, People in Tim Petersik's lab