Based on animal head positions in a rectangular tunnel i.e. box, calc_sf_box() calculates how the animal perceives the spatial frequency of lateral visual stimuli as modulated by distance to the stimulus.

calc_sf_box(obj_name)

Arguments

obj_name

The input viewr object; a tibble or data.frame with attribute pathviewR_steps that includes "viewr"

Value

A tibble or data.frame with added variables min_dist_pos and min_dist_neg describing the minimum distance to the tunnel walls as well as s_freq_pos and s_freq_neg reported in cycles per 1deg of visual angle.

Details

calc_sf_box assumes fixed gaze at the point on the either side of the tunnel that minimizes the distance to visual stimuli and thereby minimizes spatial frequencies.

See also

Other visual perception functions: calc_sf_V(), calc_vis_angle_V(), calc_vis_angle_box()

Author

Eric R. Press