Subliminal Priming - Request help setting time parameters for Prime Image


Subliminal Priming - Request help setting time parameters for Prime...
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patkelly2000
patkelly2000
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Hello. So, I have zero experience with coding and I am doing the best that I can to use the Subliminal Priming Procedure (Bona Fide) by Dr. Katja Borchert as a framework for creating a subliminal priming task using an image prime. Dr. Borchert uses text primes, however, I would like to use image primes and I do not know how to set it so that the image disappears after a certain amount of time (ex. 100ms) before the mask, then target prime appear. Right now I have gotten the image to show up, but it remains on screen as the rest of the process unfolds. I am hoping that someone with coding experience can help me figure out if I have programmed this script correctly.

Gratefully,
Patrick Kelly

Dave
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patkelly2000 - 6/15/2022
Hello. So, I have zero experience with coding and I am doing the best that I can to use the Subliminal Priming Procedure (Bona Fide) by Dr. Katja Borchert as a framework for creating a subliminal priming task using an image prime. Dr. Borchert uses text primes, however, I would like to use image primes and I do not know how to set it so that the image disappears after a certain amount of time (ex. 100ms) before the mask, then target prime appear. Right now I have gotten the image to show up, but it remains on screen as the rest of the process unfolds. I am hoping that someone with coding experience can help me figure out if I have programmed this script correctly.

Gratefully,
Patrick Kelly

(1) You need to use <picture> elements, not <image> elements. The latter are for use on surveypages only.
(2) Erasing stimuli is detailed in the documentation: https://www.millisecond.com/support/docs/current/html/howto/howtoerase.htm
It works the same way, no matter whether you are dealing with <text> or <picture> stimuli.
(3) You'll want to work through the subliminal priming tutorial in the documentation, pay particular attention to how the trials are set up:
https://www.millisecond.com/support/docs/current/html/tutorials/subliminal/subliminalcreatingtrials.htm

Edited Last Month by Dave
patkelly2000
patkelly2000
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Dave - 6/15/2022
patkelly2000 - 6/15/2022
Hello. So, I have zero experience with coding and I am doing the best that I can to use the Subliminal Priming Procedure (Bona Fide) by Dr. Katja Borchert as a framework for creating a subliminal priming task using an image prime. Dr. Borchert uses text primes, however, I would like to use image primes and I do not know how to set it so that the image disappears after a certain amount of time (ex. 100ms) before the mask, then target prime appear. Right now I have gotten the image to show up, but it remains on screen as the rest of the process unfolds. I am hoping that someone with coding experience can help me figure out if I have programmed this script correctly.

Gratefully,
Patrick Kelly

(1) You need to use <picture> elements, not <image> elements. The latter are for use on surveypages only.
(2) Erasing stimuli is detailed in documentation: https://www.millisecond.com/support/docs/current/html/howto/howtoerase.htm
It works the same way, not matter whether it's <text> or <picture> stimuli.
(3) You'll want to work through the subliminal priming tutorial in the documentation, pay particular attention to how the trials are set up:
https://www.millisecond.com/support/docs/current/html/tutorials/subliminal/subliminalcreatingtrials.htm

Thank you for your help! :)
patkelly2000
patkelly2000
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I followed the steps and came up with the error: ""item.primes.item(values.selectprime1)' Expression contains an invalid identifier"

I changed:
<item primes>
/1 = "Metapod"
/2 = "Shelder"
</item>

<text prime1>
/items = primes
/select = values.selectprime1
/ fontstyle = ("Courier New", parameters.fontheight, false, false, false, false, 5, 1)
/ txcolor = white
/txbgcolor = black
/position = (50%, 50%)
</text>

to

<picture primes>
/ items = ("BLM_Prime.jpg")
/ items = ("Neutral_Prime.jpg")
</picture>

<picture prime1>
/items = ("BLM_Prime.jpg")
/position = (50%, 50%)
</picture>

Dave
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patkelly2000 - 6/15/2022
I followed the steps and came up with the error: ""item.primes.item(values.selectprime1)' Expression contains an invalid identifier"

I changed:
<item primes>
/1 = "Metapod"
/2 = "Shelder"
</item>

<text prime1>
/items = primes
/select = values.selectprime1
/ fontstyle = ("Courier New", parameters.fontheight, false, false, false, false, 5, 1)
/ txcolor = white
/txbgcolor = black
/position = (50%, 50%)
</text>

to

<picture primes>
/ items = ("BLM_Prime.jpg")
/ items = ("Neutral_Prime.jpg")
</picture>

<picture prime1>
/items = ("BLM_Prime.jpg")
/position = (50%, 50%)
</picture>

Well, don't. You removed the <item> element referenced in the error and there is no reason to remove it. You shouldn't. The correct way of going from

<item primes>
/1 = "Metapod"
/2 = "Shelder"
</item>

<text prime1>
/items = primes
/select = values.selectprime1
/ fontstyle = ("Courier New", parameters.fontheight, false, false, false, false, 5, 1)
/ txcolor = white
/txbgcolor = black
/position = (50%, 50%)
</text>


to something that uses picture stimuli instread is

<item primes>
/ 1 = "BLM_Prime.jpg"
/ 2 = "Neutral_Prime.jpg"
</picture>

<picture prime1>
/items = primes
/position = (50%, 50%)
/select = values.selectprime1
</picture>


Before you make any further changes, please take the time to read the programmer's manual:
https://www.millisecond.com/support/Inquisit%20Programmer's%20Manual.pdf

GO

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