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tools:switchtask [2023/11/30 14:44] – created willtools:switchtask [2026/08/20 09:37] (current) – [Practice Block] will
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 ====== Switch Task (MMY4, SPA) ====== ====== Switch Task (MMY4, SPA) ======
 +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]] 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}}
 +
 +===== MR =====
 +See [[:tools:switchtask:mr]]
 +
 +===== Use =====
 +On the behavioral task computer, open Matlab ((as of 2023-11-30 this is still Matlab2015 on 32bit windows)) and run ''nBMSI LUNAID RUNTYPE''. 
 +
 +''LUNAID'' should be the participants 5 digit lunaid and ''RUNTYPE'' is ''green'', ''red'', or ''in/cog1'' to ''in/cog6''
 +
 +
 +
 +The desktop icon will launch matlab in the correct directory. Launching matlab is slow
 +
 +{{:tools:pasted:20231130-153548.png}}
 +
 +
 +{{:tools:pasted:20231130-153955.png}}
 +
 +Practice for lunaid ''12345'' looks like
 +<code>
 +cd C:\Users\localadmin\Desktop\SPASwitch_Cog_Inf
 +nBMSI 12345 green practice
 +nBMSI 12345 red practice
 +nBMSI 12345 in/cog1 practice
 +</code>
 +
 +and actually running like
 +<code>
 +cd C:\Users\localadmin\Desktop\SPASwitch_Cog_Inf
 +nBMSI 12345 green
 +nBMSI 12345 red
 +nBMSI 12345 in/cog1
 +nBMSI 12345 in/cog2
 +nBMSI 12345 in/cog3
 +nBMSI 12345 in/cog4
 +nBMSI 12345 in/cog5
 +nBMSI 12345 in/cog6
 +</code>
 +
 +
 +In the matlab command window, to save time and keep inputs consistent look to keyboard shortcuts:
 +  * ''up arrow''key to pull previously run commands.
 +  * ''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 ====
 +
 +  * use the ''Escape'' key to quit early.
 +  * if something goes very wrong: ''Alt+Tab'' then ''Ctrl+c'' then ''sca''
 +    - Hold ''Alt'' and tap ''Tab'' until the matlab icon is selected
 +    - Hold ''Control'' and tap ''c'' (''Ctrl+c''). 
 +    - type (blindly) ''sca'' and then hit ''enter''
  
 ===== Trouble shooting ===== ===== Trouble shooting =====
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 To fix, ''cd'' to the correct directory To fix, ''cd'' to the correct directory
 <code> <code>
-cd C:\Users\localadmin\Desktop\SPASwitch_Cog_Inf\private+cd C:\Users\localadmin\Desktop\SPASwitch_Cog_Inf
 </code> </code>