Further to my previous email, it has been suggested that users may want
to "enter the bulb change into the GLMs even if they don't calibrate" ..
this would attempt to regress out any systematic effect of the bulb
change on your data.
To be clear, any data acquired as of 9am on Monday the 14th of May has
been acquired with a new bulb; data acquired before that was with the
old bulb.
Thanks
On 15/05/12 14:16, Andre Gouws wrote:
The lamp in the projector in MRI failed yesterday and
had to be
replaced. Any users who have luminance sensitive paradigms (i.e. who
have calibrated their stimuli for luminance in the past) should consider
repeating these measures and making any necessary changes as the lamp
brightness may now be different.
Thanks,
--
Andre'
************************************************************************
Andre Gouws
York Neuroimaging Centre
The Biocentre
York Science Park
Heslington
YO10 5DG
Tel: +44 (0) 1904 435328
Fax: +44 (0) 1904 435356