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--- tools:switchtask [2024/03/18 15:44] – ↷ Links adapted because of a move operation will
+++ tools:switchtask [2026/08/20 09:37] (current) – [Practice Block] will
@@ Line 2: / Line 2: @@
 Also known as  ''nBMSI''  n-Back Multi-Source Interference. Original used [[tools:mmy4:switch|MMY4]] but with 3rd n-back trial type.
-Code shared publicly at https://github.com/labneurocogdevel/MMY4 written in [[:tools:matlab]] with [[:tools:psychtoolbox]]
+Code shared publicly at https://github.com/labneurocogdevel/MMY4 written in [[:tools:matlab]] with [[:tools:psychtoolbox]] and adapted for EEG with [[:tools:psycyhopy]]/python
 Bart's 2016 WPIC poster on the task: {{ :tools:larsen_wpic_2016.pdf |Brain state expression and cognitive flexibility in adolescence and young-adulthood}}
@@ Line 49: / Line 49: @@
   * ''ctrl+left arrow'' and ''ctrl+right arrow'' move the input text cursor by word.
   * ''Shift+ctrl+left'' to highlight a word (and type over it to replace)
+==== Practice Block ====
+The practice block ends when enough correct responses are registered in a row. The [[https://github.com/LabNeuroCogDevel/MMY4/blob/master/private/getSettings.m#L231|threshold setting]] is different for block types: 3 for pure blocks, <del>5</del> 7 for mix.
+On 2026-08-18, the number of correct trials to quit the practice mix block was increased from 5 to 7 after noticing a randomly assigned first cog block of 5 trials could result in a participant never seeing a switch.
 ==== Early Quit ====