Neuromag event values

alotof eve alotof_xd at YAHOO.COM
Wed Apr 18 20:10:39 CEST 2007

Hi, My data is also from Vectorview, 306 sensors.
  The trigger in my data is on 'STI101'. You might check this by commond:
  My unique event.type is: 'STI101' 'STI301' 'trial'
  Then I use:
  [event(find(strcmp('bckpanel trigger', {event.type}))).value]

  The value I got are exactly the same as the triggers I set.

  But I did this before timelock analysis.

Myles Reilly <Myles.Reilly at HSC.UTAH.EDU> wrote:
  It's a Vectorview, 306 sensors. The first one actually.


-----Original Message-----
From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On
Behalf Of Daniel Kislyuk
Sent: Tuesday, April 17, 2007 4:12 PM
Subject: Re: [FIELDTRIP] Neuromag event values

What Neuromag system do you have? With the newer models it's enough to
look at the channel STI 014 only, where the events are very clearly
coded in an easily extractible way.


On 4/18/07, Myles Reilly wrote:
> Hello,
> I have been trying timelockanalysis on continuous Neuromag data.
> It does do the average but the results don't match averages calculated
> Neuromag applications. In Fieldtrip I can see a single event
> named 'trigger' that has 2 values, [3.0953e-004]
> and [6.1907e-004]. There are actually two triggers with the values 1
and 2.
> Interestingly 3.0953 * 2 = 6.196 so I wonder if there is a calibration
> factor at work here.
> I suspect both triggers are being averaged together.
> Thank you for any direction you can give me on this,
> Myles

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