me_gabor_01
WM Working Models www.iModel.org/wm
Overview
This model type is inspired by the motion energy model described by Adelson and Bergen (1995).
Configuring the Model
Parameters
These 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)
Filter
me_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 Generation
me_gabor_01 models require a <spike_gen> object that defines the method of spike generation from the final filter output.
Model Outputs
Model Components
The 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 Responses
The 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