Dear Oleg,
It could be a number of things going on, but it is close to impossible to make an informed guess without knowing more about the onset, the vertical component and, last but not least, prior stimuli.
To me the trace looks like a subject expecting a stimuli at one position and then correcting very transiently, but it is hard to tell without knowing more about the recording.
Best regards,
Gustaf Öqvist Seimyr
The Bernadotte Laboratories
St. Erik Eye Hospital
Karolinska Institutet
3 sep 2010 kl. 17:24 skrev "Komogortsev, Oleg V" <[log in to unmask]>:
> Hello everybody,
>
> In our lab we are trying to develop reliable algorithms for classification of complex oculomotor behavior, with some details described in http://ecommons.txstate.edu/cscitrep/18/
> Recently we have acquired EyeLink II and we are trying to classify some of the oculomotor events that became visible when recording is conducted at the frequency of 1000Hz or higher.
> We are presenting horizontal step stimulus to the subject.
>
>
> We have encountered an event where a saccade to a target is slightly broken in the middle, the event does not look like an express saccade, i.e. there is not enough latency in the between the pieces. The picture of the event is present here http://daizanxun.blog.com/files/2010/09/eye-movement.jpg
>
>
> My question what is it?
>
> May be it is equipment slippage? Or maybe saccade trajectory change during some sort of the neuronal control noise during saccade's pulse?
> I was not been able to find an example of this type of behavior in the research literature and I was hoping that somebody would be able to point me to the correct source.
>
> Thank you in advance.
>
> ---Oleg
>
> ---
> Dr. Oleg Komogortsev
> Assistant Professor
> Texas State University-San Marcos
> Department of Computer Science
> 601 University Drive
> San Marcos, TX 78666-4616
> Phone: (512) 245-0349 Fax: (512) 245-8750
> Email: [log in to unmask]<mailto:[log in to unmask]>
> Webpage: www.cs.txstate.edu/~ok11<http://www.cs.txstate.edu/~ok11>
>
>
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