-
Notifications
You must be signed in to change notification settings - Fork 45
Time
This page is under construction.
We describe the time base, which can be very confusing, for different components.
The stimulus (oisequence), eye movement, cone integration time, photocurrent, bipolar, ganglion cell
One good page here with examples about coordinating the time base across different objects.
The optical image has its time base that is part of the oiSequence structure; see OI sequences.
The computeForOISequence method in coneMosaic handles the timing relationship between the refresh of the optical image data and the timing of the eye movements. The eye movement sequence time base is always locked to the cone integration time.
Often, we run the coneMosaic integration time with a 1 ms time base. The photocurrent smooths everything substantially. The main reason to keep the time base very short is the biophysical model needs a short delta T.
The different time bases are managed in the computeForOISequence code.
In this illustration the eye movement time base is updated faster than the oiSequence time base
% |----- oiRefreshInterval ----|----- oiRefreshInterval ----|----- oiRefreshInterval ----|
% oi | | | |
% sequence | |<-----tFrameStart | |
% _____________.____________________________| tFrameEnd------->|____________________________|
% eye | | | | | | | | |
% movement | | |-intTime->|-intTime->|-intTime->| | | |
% sequence | | | | | | | | |
% ------------------------------------******xxxx|**********|**********|--------------------------------|
% p1 p2 full full
% partial absorption_/ \_partial absorption \_ full absorption
%
In this illustration the eye movement time base is updated slower than the oiSequence time base
% | | | | | | | |
% oi | | |-oiRefresh->|-oiRefresh->|-oiRefresh->| | |
% sequence | | | ********|************|******* | | |
% ---------------------------------------------partial-----full-----partial-------------------------------
% absorption absorption absorption
% eye | | | |
% movement | | | |
% sequence | |<-----emStart | |
% _____________._____________________________| emEnd------->|_____________________________|