3/27/2023 0 Comments Psychopy oddball paradigm![]() When testing the timing of this paradigm we found that there is 2ms between the onset of any stimulus and the trigger.Ĭreated by Douwe Horsthuis and Ana Francisco Visual Oddball Visual discrimination duration oddballįor this oddball the duration of the deviant changes depending on the blocks. Each block needs to be ran 4 times resulting in 144 deviants. This should results in a MMN, however this specific MMN wasn't clear (not none existend) when we looked at the data so it got dropped from the project. All deviant preceded by at least 2 standards and there are no deviants in the first 4 trials. 15% of the times there is a 50ms silence presented. When testing the timing of this paradigm we found that there is 2ms between the onset of any stimulus and the trigger.Ĭreated by Douwe Horsthuis and Ana Francisco Ommision oddballįor this oddball there is a standard 1000hz 50ms tone with a rise and fall time of 5ms presented 85% of the times. The standard trial (85%) is and 800ms ISI followed by the 100ms tone, whereas the deviant trial (15%) is 260 440 or 620ms, depending on the block, followed by the 100ms tone. We still need to decide how many trails we need per blockĬreated by Luke Shaw and extra soas added + updated by Douwe Horsthuis Rhythm oddballįor this oddball paradigm the standard and deviant tone are both the same tone a 1000hz 100ms tone with a 10ms rise and fall time. The deviant is happens 20% of the time, never in a row, it is a 180ms 1000hz tone. The standard is happening 80% of the time, it is a 100ms 1000hz tone. This experiment has also a behavioral part where it only does 30 trials and people should click for the deviant.Ĭreated by Douwe Horsthuis and Ana Francisco Duration tone oddballįor this oddball the soa is changing, there is a 225-45-3000 ms SOA. If you plan to use this paradigm, you need to measure if this timing is also accurate for that computer. When testing the timing of this paradigm we found that there is 2ms between the onset of any stimulus and the trigger. For each block there is 1 currently, but if this paradigm is ran for a study, use the matlab file to create 50 for each condition and change the presentation code to randomize which one it'll pick. If the trial is a deviant or standard is decided in a semi randomized txt file. Each block contains 240 trials (192 standards and 48 deviants). The tones are all 1000hz and are created using audacity.Every trail has a 800 ms ISI after a standard and the ISI after a deviant depends on whatever the length of the deviant is so the trial ends up being also 900 ms. The standard is happenin 80% of the time and the deviant is happens 20% of the time. The deviants have a duration of 115ms (11ms rise/fall) 130ms (13ms rise/fall) 145ms (15ms rise/fall) 160ms (16ms rise/fall). The standard tone has a 100ms tone that contains at the start and end a 10ms rise and fall time. These need to be created first using the matlab file (MMN_makeSequence) Auditory oddball Duration discrimination oddballįor this oddball the duration of the deviant tone changes. Auditory duration discrimination oddballĪlmost all paradigms will have 50 sequence files of one randomly will be selected.In this repo everyone can add all the the oddball paradigms that are being ran at the CNL. It currently has a Duration oddbal tone paradigm and a Visual oddball pardigm Oddball paradigm All new oddball paradigms that are run in the CNL can be added to this Repo.
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