[Eeglablist] Question about EEGLAB tutorial

[Makoto Miyakoshi]

Dear Jason,

Whenever repeated measures applies you want to use the 'paired' checked
otherwise you'll lose statistical power.

Makoto

On Tue, Oct 6, 2015 at 11:27 AM, jason roger <jasonroger8 at gmail.com> wrote:

> Dear Makoto,
>
> Thanks for your kind help.
>
> Due to the fact of using the "Condition" option while creating a STUDY, do
> you recommend, though, utilizing repeated measures for the statistical
> analysis?
>
> Best regards,
> Jason
>
> On Wed, Oct 7, 2015 at 1:59 AM, Makoto Miyakoshi <mmiyakoshi at ucsd.edu>
> wrote:
>
>> Dear Jason,
>>
>> > 1-What's the meaning of the word "conditions" in upper section "To
>> compare event-related EEG dynamics for a subject in two or more conditions
>> from the same experiment"? In other words, does that mean, if I have
>> dataset of one participant with 2 events ("rt", and "square"), and  in oder
>> to compare those events, I need to seperate my data into 2 datasets where
>> each of them has one event (first dataset is related to the rt event, and
>> second dataset is related to the square event?
>>
>> A condition here means independent variable in the experimental
>> framework. There are within-subject conditions and between-subject (i.e.
>> group) conditions.
>>
>> For example, Oddball paradigm typically consists of standard (95%
>> frequency) and rare (5% frequency) trials. This is a within-subject
>> condition, and you use repeated measures (or 'paired') for statistics. An
>> example of between-subject condition is the group difference between
>> American and Japanese, or those who drink offer vs. black tea, etc.
>>
>> > 2-Is the term "event-related EEG dynamics" (mentioned up) can be
>> considered as "event-related potential"?
>>
>> Right. They don't want to use 'event-related potential' because for the
>> historical reason it tends to mean trial-averaged line plot of
>> event-related potentials.
>>
>> Makoto
>>
>> On Tue, Sep 29, 2015 at 2:34 AM, jason roger <jasonroger8 at gmail.com>
>> wrote:
>>
>>> Dear all,
>>>
>>> In EEGLAB tutorial under the section "Selecting events and epochs for
>>> two conditions" was written:
>>>
>>> "To compare event-related EEG dynamics for a subject in two or more
>>> conditions from the same experiment, it is first necessary to create
>>> datasets containing epochs for each condition. In the experiment of our
>>> sample dataset, half the targets appeared at position 1 and the other half
>>> at position 2".
>>>
>>> My queations:
>>> 1-What's the meaning of the word "conditions" in upper section "To
>>> compare event-related EEG dynamics for a subject in two or more conditions
>>> from the same experiment"? In other words, does that mean, if I have
>>> dataset of one participant with 2 events ("rt", and "square"), and  in oder
>>> to compare those events, I need to seperate my data into 2 datasets where
>>> each of them has one event (first dataset is related to the rt event, and
>>> second dataset is related to the square event?
>>>
>>> 2-Is the term "event-related EEG dynamics" (mentioned up) can be
>>> considered as "event-related potential"?
>>>
>>> Thanks.
>>> Jason
>>>
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>>
>>
>>
>> --
>> Makoto Miyakoshi
>> Swartz Center for Computational Neuroscience
>> Institute for Neural Computation, University of California San Diego
>>
>
>


-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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