WM Working Models www.iModel.org/wm
OverviewThis model type is inspired by the motion energy model described by Adelson and Bergen (1995).
Configuring the Model
ParametersThese parameters set the basic simulation settings:
- sscale - spatial resolution (degrees/pixel)
- tscale - temporal resolution (samples per second)
- xn - filter x-axis spatial extent (pixels)
- yn - filter y-axis spatial extent (pixels)
- tn - duration of the model (sampling units)
Filterme_gabor_01 models use a <filter> object that specifies parameters for the spatiotemporal RFs of each input subunit. These models use a 'Gabor' type filter.
Spike Generationme_gabor_01 models require a <spike_gen> object that defines the method of spike generation from the final filter output.
Model ComponentsThe spatial filters for each of the four component subunits can be output using the <filter> object's 'write_filter' option. If Poisson spike generation is used, then the output firing probability can be written to a .pl file using the 'spike_dump' option in <spike_gen>.
Model ResponsesThe following response types can be requested:
A template .rsp file including these quantities can be downloaded here.
- spikes - spike times
- filter_pref_even - raw output of the preferred, even filter
- filter_pref_odd - raw output of the preferred, odd filter
- filter_anti_even - raw output of the anti-preferred, even filter
- filter_anti_odd - raw output of the anti-preferred, odd filter
- me_pref_raw - the sum of the squares of the even and odd preferred direction filter
- me_anti_raw - the sum of the squares of the even and odd anti-preferred direction filter
- me_pref - the me_pref_raw signal after any exponentiation, gain control, etc.
- me_anti - the me_anti_raw signal after any exponentiation, gain control, etc.
- me_opp - opponent ME signal: me_pref - me_anti
Models of This Type