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Experimental Interpretable Pupil Response Shape

library(gp3bayes)
sim <- simulate_pupil_response_shape(
  n_participants = 12,
  trials_per_participant = 4,
  time_points = 41,
  condition_amplitude_ratio = 1.25,
  condition_onset_shift = 100,
  seed = 3060
)

The 0.5 experimental family is intentionally singular rather than an arbitrary nonlinear-formula API. It represents a positive-amplitude asymmetric gated response using baseline, log-amplitude, onset, log-rise, log-duration, and log-decay parameters.

spec <- specify_pupil_response_shape_model(
  sim$data,
  family = "gaussian",
  condition_effects = c("amplitude", "onset", "duration"),
  participant_effects = c("baseline", "amplitude")
)
spec
#> <gp3bayes_pupil_response_shape_specification>
#>   EXPERIMENTAL: TRUE
#>   Family: gaussian 
#>   Condition effects: amplitude, onset, duration 
#>   Fit performed: FALSE

translated <- translate_pupil_response_shape_to_brms(spec)
fit <- fit_pupil_response_shape_model(
  spec,
  backend = "cmdstanr",
  chains = 4,
  iter = 2500,
  warmup = 1250,
  cores = 2
)

pars <- estimate_pupil_response_parameters(fit)
pupil_response_parameter_table(pars)
plot_pupil_response_parameters(pars)

The parameters remain properties of this response model. gp3bayes does not relabel amplitude as attention, onset as surprise, or duration as cognitive effort.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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