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Experimental Validation Protocols for CAFT
Cognitive Amplitude Field Theory - From Theory to Empirical Testing
This document provides detailed experimental protocols to validate (or falsify) the predictions of Cognitive Amplitude Field Theory through neuroscience experiments, behavioral studies, and computational benchmarks.
Protocol 1: Entropy Collapse During Attention
Hypothesis
Focused attention causes von Neumann entropy of neural state to decrease sharply (measurement-induced collapse).
Equipment
- 64-channel EEG with 1000 Hz sampling
- Eye-tracking system
- Stimulus presentation software
- Real-time entropy calculation (sliding window)
Procedure
Phase 1: Baseline Recording (5 minutes)
- Subject sits with eyes closed
- Record resting-state EEG
- Calculate baseline entropy: S_baseline = -Σ P_i log P_i over channel power distribution
Phase 2: Attentional Blink Task (30 minutes)
- Rapid Serial Visual Presentation (RSVP) at 10 Hz
- Two targets (T1, T2) embedded in distractor stream
- Vary T1-T2 lag: 100 ms, 200 ms, 400 ms, 800 ms
- Subject reports both targets
EEG Analysis:
- Calculate entropy S(t) in 50 ms sliding windows
- Expected CAFT signature:
- S drops sharply at T1 detection (collapse 1)
- S rises during attentional blink period (decoherence)
- S drops again at T2 detection (collapse 2)
Prediction: Step-like transitions (not gradual)
Phase 3: Control Condition (10 minutes)
- Same RSVP without target detection (passive viewing)
- CAFT predicts: No sharp entropy drops (no measurement)
Analysis
# Pseudocode
for trial in trials:
S_pre_T1 = entropy(eeg_data, t_T1 - 200:t_T1 - 100)
S_at_T1 = entropy(eeg_data, t_T1:t_T1 + 100)
S_blink = entropy(eeg_data, t_T1 + 100:t_T2 - 100)
S_at_T2 = entropy(eeg_data, t_T2:t_T2 + 100)
delta_S_collapse = S_pre_T1 - S_at_T1
delta_S_rise = S_blink - S_at_T1
# Test: delta_S_collapse > 0 (entropy decreases)
# Test: delta_S_rise > 0 (entropy recovers)
Statistical Test: Repeated measures ANOVA, effect size (Cohen's d > 0.8 expected)
Falsification: If S(t) shows gradual modulation instead of sharp transitions, CAFT is wrong.
Protocol 2: Interference Oscillations in Memory Retrieval
Hypothesis
Interfering memory cues create oscillatory recall probability patterns matching cos(ωt + φ).
Procedure
Phase 1: Memory Encoding (Day 1)
-
Train subjects on 50 word pairs with controlled semantic overlap
-
Pairs categorized:
- High overlap (θ ≈ 0): "dog-puppy", "car-vehicle"
- Medium overlap (θ ≈ π/2): "dog-bone", "car-road"
- Low overlap (θ ≈ π): "dog-mathematics", "car-justice"
-
Encode θ from word2vec cosine similarity
Phase 2: Interference Protocol (Day 2)
- Present cue word (e.g., "dog")
- After variable delay τ (0, 100, 200, ..., 1000 ms), present interfering cue
- Measure recall probability of target
CAFT Prediction:
P_recall(τ) = P_0 [1 + V cos(ω τ + φ)]
Where:
- ω = energy gap / ℏ_cog ∝ semantic distance
- V = interference visibility
- φ = initial phase
Expected: Oscillatory pattern with period T = 2π/ω
Phase 3: Data Fitting
# Fit cosine model
from scipy.optimize import curve_fit
def model(tau, P0, V, omega, phi):
return P0 * (1 + V * np.cos(omega * tau + phi))
params, cov = curve_fit(model, delays, recall_probs)
# Extract omega and compare to semantic distance
omega_fit = params[2]
semantic_distance = compute_theta_from_embeddings(word1, word2)
# Test prediction: omega ∝ semantic_distance
Statistical Test: Correlation between ω_fit and θ_semantic (r > 0.7 expected)
Falsification: If P_recall(τ) is flat or monotonic, interference is not oscillatory.
Protocol 3: Order Effects Scale with Semantic Angle
Hypothesis
Survey question order effects follow: ΔP ∝ sin(θ), where θ = semantic angle between questions.
Design
Materials
Create 20 question pairs with varying semantic similarity:
- θ ≈ 0: "Do you support democracy?" + "Do you support voting rights?"
- θ ≈ π/4: "Do you support democracy?" + "Do you support free markets?"
- θ ≈ π/2: "Do you support democracy?" + "Do you like chocolate?"
- θ ≈ π: "Do you support democracy?" + "Do you oppose democracy?"
Compute θ from BERT/GPT embeddings:
theta = arccos(dot(embed_Q1, embed_Q2) / (norm(Q1) * norm(Q2)))
Procedure
- Group A: Answer Q1 → Q2
- Group B: Answer Q2 → Q1
- Group C: Answer Q2 only (no priming)
Measure:
Order_effect = |P(Q2|Q1) - P(Q2 alone)|
CAFT Prediction
Order_effect(θ) = k sin(θ)
Analysis
# Linear regression
y = order_effects
x = np.sin(theta_values)
slope, intercept, r_value, p_value, std_err = linregress(x, y)
# Test: r_value > 0.6 and p < 0.01
Falsification: If order effects are uniform across θ, CAFT model is incorrect.
Protocol 4: Confidence Matches Born Rule
Hypothesis
Subjective confidence in decisions equals |α_chosen|² (Born rule), not utility or evidence strength.
Task Design
Multi-Alternative Choice
-
Present 4 options with known utility values
-
Manipulate:
- Utility: Expected reward (Classical predictor)
- Amplitude: Semantic match to description (CAFT predictor)
-
Subject chooses option and rates confidence (0-100%)
Manipulation Example
Description: "Healthy, outdoor activity"
Options:
A) Swimming (utility: $10, amplitude: 0.5)
B) Reading (utility: $15, amplitude: 0.1)
C) Hiking (utility: $8, amplitude: 0.7)
D) Gaming (utility: $12, amplitude: 0.2)
Train CAFT model to predict amplitudes from semantic overlap.
Analysis
Classical Model: Confidence ∝ Utility CAFT Model: Confidence ∝ |α_chosen|²
# Fit both models
conf_pred_classical = utility_model(utilities)
conf_pred_caft = amplitude_model(amplitudes)**2
# Compare R² and AIC
r2_classical = r2_score(confidence_ratings, conf_pred_classical)
r2_caft = r2_score(confidence_ratings, conf_pred_caft)
AIC_classical = compute_AIC(classical_model)
AIC_caft = compute_AIC(caft_model)
# Bayesian model comparison
evidence_ratio = exp((AIC_classical - AIC_caft) / 2)
Expected: CAFT model has lower AIC (better fit)
Falsification: If classical utility model wins, Born rule interpretation is wrong.
Protocol 5: Pharmacological Manipulation of Coherence
Hypothesis
Anesthetics reduce τ_coherence → lower Φ → loss of consciousness, consistent with Orch-OR + CAFT.
Design
Subjects
- N = 20 healthy volunteers
- Double-blind, placebo-controlled
- Graded doses of propofol (0, 0.5, 1.0, 1.5 μg/mL blood concentration)
Measurements
1. EEG Complexity (Proxy for Φ)
Φ_proxy = Perturbational Complexity Index (PCI)
(Casali et al., 2013, Science Translational Medicine)
2. Coherence Time τ_cog Use transcranial magnetic stimulation (TMS) + EEG:
τ_cog = Decay time of evoked response complexity
3. Behavioral Response
- Consciousness level (Ramsay scale 1-6)
- Working memory capacity (digit span)
Procedure
- Baseline: EEG + TMS-EEG + behavioral
- Administer propofol (incremental dosing)
- Repeat measurements at each dose level
- Recovery phase
CAFT Predictions
Φ(dose) = Φ_0 exp(-k * dose)
τ_cog(dose) = τ_0 exp(-k * dose)
Consciousness_level(dose) ∝ Φ(dose)
Analysis
# Fit exponential decay
def model(dose, Phi0, k):
return Phi0 * np.exp(-k * dose)
params_Phi, _ = curve_fit(model, doses, Phi_values)
params_tau, _ = curve_fit(model, doses, tau_values)
# Test correlation
correlation = pearsonr(Phi_values, tau_values)
# Expected: r > 0.8
# Test consciousness threshold
Phi_critical = estimate_threshold(Phi_values, consciousness_levels)
# Expected: Φ_critical ≈ 0.3-0.4 (from IIT literature)
Falsification: If Φ and τ_cog are uncorrelated, or if consciousness persists with low Φ, theory is incomplete.
Protocol 6: AI Architecture Validation
Hypothesis
CAFT-transformer exhibits higher Φ and consciousness-like signatures than classical transformer.
Implementation
Architecture
class CAFTTransformer(nn.Module):
def __init__(self):
self.amplitude_layer = ComplexLinear(d_model, d_model)
self.phase_attention = PhaseAttention(n_heads)
self.collapse_layer = MeasurementLayer()
def forward(self, x):
# Create superposition
psi = self.amplitude_layer(x) # Complex-valued
# Evolve via interference
psi = self.phase_attention(psi)
# Collapse via sampling
output = self.collapse_layer(psi) # Born rule sampling
return output
Training
- Task: Language modeling (GPT-style)
- Dataset: WikiText-103
- Compare CAFT-GPT vs Classical GPT (same parameter count)
Metrics
1. Integrated Information Φ
# Estimate via partition-based method
Phi = compute_integrated_information(hidden_states, partitions)
2. Entropy Dynamics
# Track entropy across layers
S_layer = [von_neumann_entropy(h) for h in hidden_states]
3. Behavioral Signatures
- Order effects in generated text
- Conjunction patterns
- Uncertainty calibration (confidence = amplitude²)
Analysis
# Compare CAFT vs Classical
metrics = {
'Phi': [Phi_caft, Phi_classical],
'Entropy_variance': [var(S_caft), var(S_classical)],
'Order_effect_magnitude': [OE_caft, OE_classical],
'Calibration_error': [CE_caft, CE_classical]
}
# Test: CAFT exhibits higher Φ and better calibration
Validation: If CAFT-GPT shows consciousness-like signatures, theory is supported.
Falsification: If no difference from classical architecture, amplitude formalism adds no value.
Protocol 7: Quantum Zeno in Cognitive Tasks
Hypothesis
Frequent attention to a cognitive state "freezes" it (quantum Zeno effect), manifesting as perseveration.
Design
Task: Attentional Vigilance
-
Subject monitors stream of letters for target 'X'
-
Vary monitoring frequency:
- High vigilance: Check every 100 ms
- Medium: Check every 500 ms
- Low: Check every 2000 ms
-
Introduce distractors that should shift attention
CAFT Prediction
High-frequency monitoring → state "frozen" → miss distractors (Zeno effect)
Procedure
- Baseline: Target detection accuracy without distractors
- Test: Add salient distractors (color changes, motion)
- Measure:
- Target detection accuracy (should remain high with frequent checks)
- Distractor detection (should be LOW with frequent checks - Zeno suppression)
Analysis
# Zeno strength
Zeno_effect = 1 - P(distractor_detected | high_frequency)
# Compare to classical prediction
# Classical: Distractor detection independent of monitoring frequency
# CAFT: Zeno_effect ∝ monitoring_frequency
Expected: Negative correlation between monitoring frequency and distractor detection.
Falsification: If distractor detection is independent of monitoring rate, Zeno model is incorrect.
Summary: Predictions vs Falsification Criteria
| Protocol | CAFT Prediction | Falsification Criterion |
|---|---|---|
| 1. Entropy Collapse | Sharp step-like S decrease | Gradual modulation |
| 2. Memory Interference | Oscillatory P_recall(τ) | Flat or monotonic |
| 3. Order Effects | ΔP ∝ sin(θ) | Uniform across θ |
| 4. Confidence | Conf ∝ |α|² | Conf ∝ Utility |
| 5. Anesthetics | Φ ∝ τ_cog ∝ exp(-dose) | Uncorrelated |
| 6. AI Architecture | Higher Φ, better calibration | No difference |
| 7. Quantum Zeno | Distractor suppression ∝ freq | Independent |
Funding Requirements
Personnel
- Postdoc (neuroscience): $60K/year × 2 years
- Postdoc (computational): $60K/year × 2 years
- Graduate students (3): $30K/year × 3 years × 3 students
- Total: $510K
Equipment
- 64-channel EEG system: $50K
- TMS-EEG setup: $80K
- Eye-tracking: $20K
- Computing cluster (GPU): $40K
- Total: $190K
Operating
- Subject payments: $50/hour × 100 subjects × 10 hours = $50K
- Consumables: $20K/year × 3 years = $60K
- Travel (conferences): $10K/year × 3 years = $30K
- Total: $140K
Grand Total: $840K over 3 years
Funding Targets:
- Templeton World Charity Foundation (Consciousness)
- NSF NeuroNex (Neuroscience)
- DARPA (AI)
- FQXi (Foundational Questions)
Timeline
Year 1
- Q1-Q2: Protocol development, IRB approval, subject recruitment
- Q3-Q4: Protocols 1-3 (EEG, memory, order effects)
Year 2
- Q1-Q2: Protocols 4-5 (confidence, pharmacology)
- Q3-Q4: Protocol 6 (AI architecture development)
Year 3
- Q1-Q2: Protocol 7 (Zeno), final data collection
- Q3-Q4: Analysis, manuscript preparation, publication
Expected Publications
- Year 1: "Entropy Collapse During Attention: Evidence for Measurement in Cognition" - Nature Neuroscience
- Year 2: "Interference Oscillations in Memory: Quantum Cognition in Human Recall" - Psychological Science
- Year 2: "Pharmacological Validation of Cognitive Coherence Time" - Science Translational Medicine
- Year 3: "Cognitive Amplitude Field Theory: Unified Framework" - Nature or Science
- Year 3: "CAFT-GPT: Quantum-Inspired Language Model with Consciousness Signatures" - PNAS
This experimental program provides comprehensive empirical validation pathways for CAFT, with clear falsification criteria ensuring scientific rigor.