Dear Haiteng,
's' in this case means that there can be either one threshold or many
thresholds (a value per channel). It would not be correct to add units
because the data SPM handles is not necessarily in microV. The units
of the threshold should be the same as the units of the data.
Best,
Vladimir
On Tue, Feb 24, 2009 at 3:18 AM, dolphin <[log in to unmask]> wrote:
> Dear vladimir
> I am sorry to disturb you,but I have found a small error in spm8b:
> As described in manual Chapter 12-EEG/MEG preprocessing | Brief Tutorial
> 12.8 Artefacts
> Next, click in the top-left SPM-GUI on 'Artefacts', and select the
> fdeMspm8example.mat .Answer 'no' to 'Read own artefact list?'. Answer 'no'
> to 'robust average?'. Answer 'yes' to 'Threshold channels?'. Press return to
> choose the default of which channels you want to threshold, i.e.,Choose as
> threshold
> The GUI will present :
> threshold[S]
> the unit of threshold is microV ,usually the s stands for time unit
> second .This will produce misunderstanding for many beginners such as me
> at frist.
> it can be modified in revising spm_eeg_artefact.m
> in line 162
> form str = 'threshold[s]'
> to
> str = 'threshold[microV]'
> I think it would be better.Do you think so?
>
> --
> haiteng jiang
> Research Center for Learning Science,
> Southeast University
> Si Pai Lou 2 # , Nanjing, 210096, P.R.China
> Mobile:+86-13813998827
> Email: [log in to unmask]
>
>
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