sta_multi

Compute the spike-triggered average (STA) of the stimulus in cases where the stimulus is multi-dimensional.

Output types

• plot - write various STA plots

Parameters

• sta_t0 - (-200) Start time of STA averaging window.
• sta_tn - (200) Duration of STA averaging window.
• stam_tstep - (10) Time step for slicing 2D response surfaces
• stim_dt - typically, the number of milliseconds during which the stimulus pattern remained constant. (Officially, this time value is in the sampling units of the spike channel.)
• stam_paxis - ("ori" if ori varies, "sf" if ori is fixed and sf varies) the name of the principle axis. This gets set by default.
• output_norm - ("raw") units for y-axis, one of the following:
  • raw - the number of times the stimulus was found at the time lag before a spike
  • response - the average firing rate in response to the stimulus
  • prob - the probability of observing the stimulus before a spike
• stim_type - stimulus type, currently must be ran_sin

  Relevant for 'ran_sin'

• stam_all_at_ori - For ori-phase cases, specifies an orientation for which response vs. time plots will be given at all phases.
• stam_all_at_sf - For SF-phase cases, specifies an SF for which response vs. time plots will be given at all phases.

Example

#
#  STA_multi
#
sta_multi
all
plot

chan e0808                  # Channel name for analysis

stim_type       ran_sin     # Stimulus paradigm
stim_dt         10          # Sampling units corresponding to dwell
output_norm     response    # "response", "prob", or "raw"

stam_all_at_ori 120         # Plot response_v_time for all phases at this ori