Pausing experiments and sound stimuli question

[Jenny Thomson]

We are currently developing a paradigm where a series of sounds are
presented to children as part of an ERP study (i.e. long blocks of
sounds not requiring behavioural responses for continuation)

1. We need a possibility of pausing the experiment if the child needs a
break, but can only seem to find the abort command  (Ctrl+Alt+Shift ) to
do this - has anyone got a more elegant way to pause experiments mid
flow?

2. We are also thinking of using continuous sound waves in some
conditions - has anyone tried this with EGI/Netstation and know of a way
of sending trigger tags to Netstation WITHIN the course of one sound
wav.?

Thanks,
Jenny Thomson
Psychology Dept., 
University of Jyväskylä, Finland