sta

Compute the spike-triggered average (STA) of the stimulus

Defaults

For ndata files of type "PEP", the second sync pulse is used as the start time if 'stimchan' is NULL (unset).

Options:

• simple - ??
• plot - STA plot
• pca - Principle component analysis
• ars - Adaptive rate scaling

Parameter definitions:

• sampling - (data file value).
• sta_start - (-300) Start time for averaging window.
• sta_period - (300) Duration of averaging window.
• bin_info_flag - (0) 1-estimate mutual info and bits/spk from STA, for binary stimuli only.
• fft_flag - (0) Determines stimulus interpolation
  • 0 - simple boxcar, piecewise flat
  • 1 - fft interplation
  • 2 - impulse
  • 3 - piecewise straight (triangular)
• norm_flag - (1) Normalize the stimulus.
• negate_stim - (0) multiply stimulus by -1.0 before processing.
• invert_flag - (0) invert stimulus.
• sr_resp_flag - (0) scale and invert STA to show impulse response in spikes/sec/TFunit
• sr_resp_write_conv - (0) write the nd file with an added channel "conv" that contains the resulting convolution of the stimulus with the STA.
• deconv_flag - (0)
• pos_flag - (0) change direction to position.
• metric - (0) custum metrics for 1,2, ..., sometimes writes to metric_file
• metric_file - ("zzz.zzz") Write stats to this file.
• peak_stat - (0) if 1, write basic STA peak stats to outfile.

• varcond_type - ((char *)NULL) Types of condition STA analyses
  • abs_val_avg_min - mean absolute value in [c0,c0+cn) >= vcrit
  • abs_val_avg_max - mean absolute value in [c0,c0+cn) <= vcrit
  • sqr_avg_min - mean squared value in [c0,c0+cn) >= vcrit
  • sqr_avg_max - mean squared value in [c0,c0+cn) <= vcrit
  • var_min - variance in [c0,c0+cn) >= vcrit
  • var_max - variance in [c0,c0+cn) <= vcrit
  • val_min - all values in [c0,c0+cn) >= vcrit
  • val_max - all values in [c0,c0+cn) <= vcrit
• varcond_c0 - (sta_start) start of time window for varcond (c0 and cn must define a window that fits in the sta window)
• varcond_cn - (sta_period) duration of time window for varcond
• varcond_vcrit - (0.0) numerical criterion for varcond

• ft_sta_flag - (0) compute FT of STA.
• ft_phase_deg_flag - (1) phase in degrees (1) or radians (0).
• ft_win_center - (-50) Center for Gaussian window to multiply data.
• ft_win_sigma - (0.0) SD for Gaussian window to multiply data.

Example:

#
#  STA
#
sta
all
plot
...