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experiments-database/analysis/matlab/variations/naive_a2_d0_10/result.txt
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Experiments DB Dev 8a18c894dd feat(matlab): add Satterthwaite DF + honest random-slope test to LME reports
Every fitlme-based report (lme_*, paper_*, phase_*, and the variations'
analyze.m) now shows, per effect: residual-DF p, Satterthwaite-DF p, and --
for the interaction -- an HONEST test from a per-animal random-SLOPE model
(day|rat), whose Satterthwaite DF collapses toward the animal count.

New: tdcs_random_slope_interaction.m (shared helper). Wired into tdcs_lme,
tdcs_paper_lme, tdcs_phase_lme, variation_analyze; SUMMARY.csv gains
interaction_p_satt / interaction_p_rs. Regenerated all results/, variations/,
matched-effort outputs.

Key point this surfaces: Satterthwaite ~= residual on the random-INTERCEPT
model (the slope's error is at session level), so it does NOT fix
pseudoreplication; the random-slope model does. Effect: full-range mergeA2
interaction 0.009 -> 0.75 (collapses); unmerge_d0_5 0.015 -> 0.13 (n.s.);
the pooled-control early windows survive honestly (naive_a2_d0_5 0.001 ->
0.028; naive_boxa_d0_5 0.003 -> 0.036). Suite 42/42.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-22 15:45:19 -04:00

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==============================================================================
VARIATION: naive_a2_d0_10
==============================================================================
model: behavior ~ stim + day + stim:day + (1|rat) (behavior = success COUNT)
day = training day within window (0 = first analyzed day)
treatment (stim=1): Electrode-Box-B2
control (stim=0): Electrode-Box-A2, Naive
N = 10 rats, 104 sessions raw day coverage: treat 0..10, control 0..10
(equal day coverage over this window)
==============================================================================
FULL MODEL SUMMARY -- fitlme
==============================================================================
Linear mixed-effects model fit by ML
Model information:
Number of observations 104
Fixed effects coefficients 4
Random effects coefficients 10
Covariance parameters 2
Formula:
behavior ~ 1 + day*stim + (1 | rat)
Model fit statistics:
AIC BIC LogLikelihood Deviance
869.17 885.04 -428.58 857.17
Fixed effects coefficients (95% CIs):
Name Estimate SE tStat DF pValue
{'(Intercept)'} 10.33 4.4952 2.298 100 0.023646
{'day' } 8.0905 0.53615 15.09 100 1.598e-27
{'stim' } 12.019 8.117 1.4807 100 0.14184
{'day:stim' } 1.4337 0.92893 1.5434 100 0.12589
Lower Upper
1.4115 19.248
7.0268 9.1542
-4.0853 28.123
-0.40926 3.2767
Random effects covariance parameters (95% CIs):
Group: rat (10 Levels)
Name1 Name2 Type Estimate
{'(Intercept)'} {'(Intercept)'} {'std'} 8.753
Lower Upper
5.0208 15.26
Group: Error
Name Estimate Lower Upper
{'Res Std'} 13.78 11.942 15.902
effect t(df) / F(df1) p (resid) Satterthwaite: p (df)
----------------------------------------------------------------------------
stim x day (interaction) t(100)= 1.54 F(1)= 2.382 p=0.1259 p=0.1261 (df=95)
day (learning) t(100)= 15.09 F(1)=227.710 p=1.598e-27 p=4.059e-27 (df=96)
stim (main, window start) t(100)= 1.48 F(1)= 2.192 p=0.1418 p=0.1543 (df=20)
interaction 95% CI: [-0.41, +3.28]
HONEST LME (per-animal random slope, day|rat): interaction F(1,9.0)=1.16, p=0.3093
(Satterthwaite DF ~= residual on this random-intercept model; the random-slope
model above is the honest learning-rate test -- DF collapses toward the animal count.)
INTERPRETATION: stim x day interaction n.s. -- slopes parallel (no differential learning rate) (p=0.1259, slope diff=+1.43)
Paper (N=24): interaction t(227)=2.68, F(1)=7.12, p=0.008.