barnoise

Analyze responses to a random 1-D bar pattern (monocular and binocular). Another analysis for this stimulus is available under the grid_sta

Options:

• plot - PSTHs for each bar position.

• tern_kern - 2nd order Wiener Kernel (Emerson et al., 1987). Under development. The ouput file name is used as a prefix for writing two files:
  • [outfile].sta.pl - the STA data segments are appended to this file.
  • [outfile].bmap.3d - a map of bar vs. DT is given for each bar. The values in the map are the sums of the STA segments.
  Issues:
  • The time reference for the STA plots needs to be examined for cases where dt is not 0. Does the time reference need to vary?
  • [outfile].bmap.3d - a map of bar vs. DT is given for each bar. Thus, compare each frame in the map with Figure 2 in Emerson, Citron, Vaughn and Klein (1987). The values in the map are the sums of the STA segments. The x-axis is dt (-dt_max,...,dt_max), the y-axis is the reference bar
  • Note, the kernel value for self-correlation at dt=0 is set to zero. E.g., bar 3 vs. bar 3 at dt=0 is zero.
  • Future: This can be adapted to compute separate interaction maps for white-white or black-white, etc kernels kernel value for self-correlation at dt=0 is set to zero. E.g., bar 3 vs. bar 3 at dt=0 is zero. Also, we could average absolute barmaps to get relative ones, if evidence shows that consecuitive maps apppear to be strongly orrelated

Parameter definitions:

• sampling - samples/s for analsysis (data file value)
• win0 - (0) Start time of stimulus triggered response window
• winn - (100) Duration of stimulus triggered response window
• eye_flag - (0) 0-left, 1-right, 2-binoc. For 2-bar interaction,
• dt_max - (7) the maximum positive or negative displacement of the image on a aingle fram

Example:

#
#  barnoise_kern.nda
#
barnoise
all
tern_kern

start 0
period 8000

#
#  The STA window is integrated to form the value at each point
#  in the kernal
#
win0 -100        # Start time for STA window
winn  70         # Duration of STA window

eye_flag 2       # 0-left, 1-right, 2-binoc

dt_max    7      # -7...0...+7 frames