{ "analysis_id": "analysis.human-rdm.descriptive-psychometric", "analysis_type": "descriptive_psychometric", "behavtaskatlas_commit": "4fabef6", "behavtaskatlas_git_dirty": false, "caveats": [ "The CoSMo2017 PHS MATLAB files are modified from the original Palmer-Huk-Shadlen Experiment 1 data: bad trials were removed, motion direction and coherence were combined into signed coherence, and reaction times were converted to seconds.", "Choice is coded as 0 left and 1 right. Correctness is reconstructed from signed coherence and choice using the CoSMo2017 analysis convention that treats zero-coherence trials as rightward.", "Empirical bias and threshold use linear interpolation over empirical p(right). Fitted values use a four-parameter logistic model rather than the Palmer-Huk-Shadlen diffusion-model fit." ], "chronometric_rows": [ { "evidence_strength": 0.0, "mean_response_time": 0.872375, "median_response_time": 0.798, "n_correct": 279, "n_response": 560, "n_trials": 560, "p_correct": 0.4982142857142857 }, { "evidence_strength": 3.2, "mean_response_time": 0.8307606382978724, "median_response_time": 0.768, "n_correct": 384, "n_response": 564, "n_trials": 564, "p_correct": 0.6808510638297872 }, { "evidence_strength": 6.4, "mean_response_time": 0.7316429840142096, "median_response_time": 0.678, "n_correct": 466, "n_response": 563, "n_trials": 563, "p_correct": 0.827708703374778 }, { "evidence_strength": 12.8, "mean_response_time": 0.6377490974729242, "median_response_time": 0.588, "n_correct": 531, "n_response": 554, "n_trials": 554, "p_correct": 0.9584837545126353 }, { "evidence_strength": 25.6, "mean_response_time": 0.5028077601410935, "median_response_time": 0.462, "n_correct": 564, "n_response": 567, "n_trials": 567, "p_correct": 0.9947089947089947 }, { "evidence_strength": 51.2, "mean_response_time": 0.42775221238938055, "median_response_time": 0.41000000000000003, "n_correct": 565, "n_response": 565, "n_trials": 565, "p_correct": 1.0 } ], "dataset_id": "dataset.palmer-huk-shadlen-human-rdm-cosmo2017", "generated_at": "2026-04-27T06:47:53.292796+00:00", "n_no_response_trials": 0, "n_response_trials": 3373, "n_trials": 3373, "prior_results": [ { "empirical_bias": 0.028566953797963885, "empirical_bias_coherence": 0.028566953797963885, "empirical_threshold": 4.696961680290936, "empirical_threshold_coherence": 4.696961680290936, "fit": { "bias_coherence": -0.007962199723903928, "left_lapse": 0.0013119981821004727, "method": "four_parameter_logistic_binomial_mle", "n_points": 11, "n_response_trials": 3373, "negative_log_likelihood": 1115.3094340246894, "optimizer": "scipy.optimize.minimize", "right_lapse": 0.0, "scale_coherence": 4.142092568849849, "status": "ok", "threshold_coherence": 4.550553796939303 }, "left_lapse_empirical": 0.0, "n_coherence_levels": 11, "n_response_trials": 3373, "n_stimulus_levels": 11, "n_trials": 3373, "prior_context": null, "right_lapse_empirical": 0.0 } ], "protocol_id": "protocol.human-rdm-button-reaction-time", "report_title": "Human Random-Dot Motion Report", "response_time_origin": "reaction time in seconds from CoSMo2017 PHS MATLAB file", "stimulus_label": "Signed motion coherence", "stimulus_metric_name": "coherence", "stimulus_units": "percent coherence, signed right positive", "summary_rows": [ { "median_response_time": 0.402, "n_correct": 283, "n_no_response": 0, "n_response": 283, "n_right": 0, "n_trials": 283, "p_correct": 1.0, "p_right": 0.0, "prior_context": null, "stimulus_value": -51.2 }, { "median_response_time": 0.454, "n_correct": 283, "n_no_response": 0, "n_response": 285, "n_right": 2, "n_trials": 285, "p_correct": 0.9929824561403509, "p_right": 0.007017543859649123, "prior_context": null, 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"n_response": 282, "n_right": 282, "n_trials": 282, "p_correct": 1.0, "p_right": 1.0, "prior_context": null, "stimulus_value": 51.2 } ] }