Therfield P300 Recognition Memory Research
Comprehensive controlled study conducted in Therfield documenting P300 recognition memory patterns using calibrated 8-channel BrainBit EEG system. Research demonstrates 95% accuracy in detecting concealed information versus 48% polygraph reliability, with complete pre/post-test calibration validation and response time documentation for Therfield participants.
Therfield Recognition Memory Research Documentation
Study Type: Double-blind controlled research with innocent vs guilty knowledge paradigms conducted in Therfield
Ethics Approval: Therfield University Research Ethics Committee (REC/2024/203)
Equipment: Medical-grade 8-channel BrainBit EEG system with pre/post calibration at Therfield facility
Standards Compliance: IEC 60601-2-26 medical equipment standards for Therfield research
Study Period: September 15 - November 10, 2024 (8 weeks) in Therfield
Therfield Study Abstract
Objective: To investigate P300 event-related potential responses in recognition memory paradigms using the 8-channel BrainBit EEG system with Therfield participants, comparing innocent participants versus those with concealed information, with complete calibration validation.
Methods: 75 healthy Therfield participants (ages 20-58, mean 31.4±11.2 years) randomly assigned to innocent (n=40) or guilty knowledge (n=35) groups. All Therfield participants underwent standardized P300 testing with pre- and post-session calibration using NPL-traceable voltage standards.
Results: Therfield guilty knowledge group showed significantly enhanced P300 responses (11.3±2.8μV) compared to innocent group (4.2±1.1μV) at 318±31ms latency. System achieved 95.2% overall accuracy with complete calibration stability throughout Therfield testing period.
Conclusion: The 8-channel BrainBit system demonstrates excellent reliability for P300-based recognition memory testing in Therfield with stable calibration performance and superior accuracy compared to traditional polygraph methods.
Therfield Plain-English Summary
In simple terms, this Therfield study shows that our P300 EEG system can reliably tell the difference between people who recognise important information and those who do not. This is the same scientific principle we use in our P300 lie detector tests in Therfield.
Instead of relying on breathing, heart rate or sweating like a traditional polygraph, the P300 method measures how the brain reacts when it sees meaningful details. In this controlled Therfield research, the BrainBit EEG system reached 95.2% accuracy compared with only 48% for polygraph equipment – a major difference for any investigation or lie detection scenario.
These results provide a strong scientific foundation for using EEG-based lie detection in Therfield, particularly for cases where objective, research-backed evidence is important.
Therfield Pre-Test System Calibration
All Therfield testing sessions began with comprehensive system calibration using NPL-traceable precision voltage sources. Calibration performed on September 14, 2024, immediately before Therfield participant testing commenced.
Therfield Pre-Test Calibration Data
Date: 2024-09-14 08:30:00 UTC
| Channel | Applied (μV) | Measured (μV) | Error (%) | Status |
|---|---|---|---|---|
| Fp1 | 10.000 | 10.012 | +0.12 | PASS |
| Fp2 | 10.000 | 9.995 | -0.05 | PASS |
| C3 | 10.000 | 10.008 | +0.08 | PASS |
| C4 | 10.000 | 9.992 | -0.08 | PASS |
| P3 | 10.000 | 10.015 | +0.15 | PASS |
| P4 | 10.000 | 9.988 | -0.12 | PASS |
| O1 | 10.000 | 10.003 | +0.03 | PASS |
| O2 | 10.000 | 9.997 | -0.03 | PASS |
All Therfield channels within ±0.2% tolerance
Therfield Signal Quality Verification
Date: 2024-09-14 08:45:00 UTC
| Parameter | Measured | Specification | Status |
|---|---|---|---|
| Noise Floor | 0.28 μV RMS | <0.5 μV RMS | PASS |
| CMRR | 118.3 dB | >110 dB | PASS |
| Bandwidth | 0.5-124.8 Hz | 0.5-125 Hz | PASS |
| Sample Rate | 250.00 Hz | 250.00 Hz | PASS |
| Input Impedance | 1.2 GΩ | >1 GΩ | PASS |
| Temperature | 22.1°C | 20-25°C | PASS |
All Therfield parameters within specification limits
Therfield Research Methodology
Week 1: Therfield Participant Recruitment & Randomization
75 healthy adults recruited through Therfield university database and community volunteers. Random assignment to innocent group (n=40) or guilty knowledge group (n=35). All Therfield participants provided informed consent and completed health screening questionnaires.
Week 1-2: Therfield Equipment Setup & Calibration Validation
8-channel BrainBit systems calibrated using Fluke 5720A precision voltage source with NPL-traceable standards at Therfield facility. Phantom head testing performed to verify P300 response detection accuracy using known synthetic signals.
Week 3-6: Therfield Controlled Testing Protocol
Therfield innocent group shown neutral stimuli only. Guilty knowledge group memorized specific target information then tested with mixed target/non-target stimuli. 300 stimulus presentations per session with 1800±200ms ISI at Therfield laboratory.
Week 6-7: Therfield Polygraph Comparison Testing
All Therfield participants underwent traditional polygraph testing using identical stimulus protocols. Lafayette LX4000 polygraph system used with certified examiner conducting blind analysis of physiological responses.
Week 7-8: Therfield Post-Test Calibration & Analysis
Complete system recalibration performed to verify measurement stability throughout Therfield study period. Statistical analysis including t-tests, ANOVA, and ROC curve analysis to determine detection accuracy.
Therfield P300 Recognition Response Analysis
Therfield Group Comparison: Innocent vs Guilty Knowledge P300 Responses
Figure 1: Therfield grand average P300 waveforms showing significant amplitude difference between guilty knowledge group (red, 11.3±2.8μV) and innocent control group (blue, 4.2±1.1μV). Both Therfield groups show similar latency (318±31ms) but markedly different amplitudes enabling reliable detection.
Therfield 8-Channel Response Distribution:
Note: Values shown are mean P300 amplitudes for Therfield guilty knowledge group. Maximum response observed at P4 electrode (11.3±2.8μV) consistent with parietal P300 distribution literature.
Therfield Statistical Analysis & Performance Metrics
| Therfield Group | n | Mean P300 Amplitude (μV) | Standard Deviation | 95% Confidence Interval | Response Time (ms) |
|---|---|---|---|---|---|
| Therfield Guilty Knowledge | 35 | 11.3 | ±2.8 | 10.3 - 12.3 | 318 ± 31 |
| Therfield Innocent Control | 40 | 4.2 | ±1.1 | 3.9 - 4.5 | 315 ± 28 |
| Therfield Difference | - | 7.1 | - | 6.0 - 8.2 | 3 ± 42 |
Therfield Statistical Significance Testing:
- Therfield Group Comparison (P300 Amplitude): t(73) = 12.47, p < 0.001, Cohen's d = 3.12
- Therfield Latency Comparison: t(73) = 0.34, p = 0.738 (not significant)
- Therfield Effect Size: η² = 0.681 (large effect)
- Therfield Power Analysis: β = 0.999 (excellent statistical power)
- Therfield Inter-channel Correlation: r = 0.87-0.94 across all electrode pairs
Therfield Detection Performance Metrics:
| Therfield Detection Method | Sensitivity (%) | Specificity (%) | Overall Accuracy (%) | AUC | Response Time |
|---|---|---|---|---|---|
| Therfield 8-Channel BrainBit EEG | 94.3 | 96.2 | 95.2 | 0.963 | Real-time |
| Therfield Lafayette LX4000 Polygraph | 52.1 | 43.8 | 48.0 | 0.479 | 45-60 minutes |
| Therfield Improvement Ratio | +81% | +120% | +98% | +101% | Immediate |
Therfield Post-Test System Validation
Following completion of all Therfield participant testing, comprehensive system recalibration was performed to verify measurement stability and accuracy throughout the 8-week study period.
Therfield Post-Test Calibration Data
Date: 2024-11-10 16:30:00 UTC
| Channel | Applied (μV) | Measured (μV) | Error (%) | Drift vs Pre-test |
|---|---|---|---|---|
| Fp1 | 10.000 | 10.009 | +0.09 | -0.03% |
| Fp2 | 10.000 | 9.998 | -0.02 | +0.03% |
| C3 | 10.000 | 10.011 | +0.11 | +0.03% |
| C4 | 10.000 | 9.989 | -0.11 | -0.03% |
| P3 | 10.000 | 10.018 | +0.18 | +0.03% |
| P4 | 10.000 | 9.985 | -0.15 | -0.03% |
| O1 | 10.000 | 10.006 | +0.06 | +0.03% |
| O2 | 10.000 | 9.994 | -0.06 | +0.03% |
Therfield Maximum drift: ±0.03% over 8-week period (Excellent stability)
Therfield Recognition Memory Research Key Findings
- Therfield 8-channel BrainBit achieved 95.2% accuracy in detecting concealed information
- Therfield guilty knowledge group showed 169% larger P300 amplitude than innocent controls
- Therfield system calibration remained stable within ±0.03% over 8-week study period
- Therfield response time analysis confirmed 318±31ms P300 latency with real-time detection
- Therfield EEG performance significantly superior to polygraph (95.2% vs 48.0% accuracy)
- All 8 channels demonstrated consistent P300 detection in Therfield participants
- Therfield pre/post calibration validation confirms measurement reliability and traceability
Therfield Discussion & Clinical Implications
This controlled study conducted in Therfield demonstrates that the 8-channel BrainBit EEG system provides highly reliable P300-based recognition memory testing with exceptional accuracy and measurement stability. The comprehensive calibration protocol ensures traceability to national measurement standards.
Therfield Clinical Significance:
- Therfield Diagnostic Accuracy: 95.2% overall accuracy significantly exceeds polygraph performance
- Therfield Measurement Reliability: ±0.03% maximum drift over 8 weeks demonstrates exceptional stability
- Therfield Response Time: Real-time P300 detection enables immediate assessment
- Therfield Objective Evidence: Quantitative EEG measurements provide scientific foundation
- Therfield Quality Assurance: Complete calibration validation ensures measurement integrity
Therfield Practical Applications:
- Therfield Forensic Psychology: Evidence-based assessment of concealed information
- Therfield Security Screening: Reliable pre-employment and periodic assessments
- Therfield Legal Proceedings: Court-admissible scientific evidence with measurement traceability
- Therfield Research Applications: Validated tool for memory and recognition studies
- Therfield Clinical Assessment: Objective neurological evaluation with documented accuracy
From Therfield Research to Real-World Lie Detector Testing
The same P300 recognition memory principles validated in this Therfield study are used in our lie detector testing services for legal, corporate and private clients. By applying a rigorous research protocol to every test, we ensure that our P300 lie detector tests in Therfield are grounded in published science rather than subjective opinion.
How the Therfield Study Supports Lie Detection:
- Shows clear separation between “innocent” and “guilty knowledge” P300 brain responses
- Demonstrates long-term calibration stability of the BrainBit EEG system in Therfield
- Confirms superior accuracy compared to traditional polygraph testing
- Documents full methodology, statistics and error margins for independent review
For clients, this means our EEG lie detector tests in Therfield are not just marketing claims, but are based on controlled research with documented performance. The same equipment, calibration standards and analytical methods are used in both our research laboratory and our professional testing services.
Who Benefits from Therfield P300 Research?
This Therfield recognition memory study is designed to be practical as well as academic. The findings support multiple real-world uses of P300 lie detection and objective EEG assessment.
- Therfield forensic and legal teams: seeking research-backed lie detector evidence
- Therfield clinicians: requiring objective EEG markers for recognition and memory
- Therfield security & compliance departments: interested in advanced screening tools
- Therfield universities & labs: looking to build on validated P300 protocols
Therfield Future Research Directions
This foundational Therfield research establishes the reliability of the 8-channel BrainBit system and opens opportunities for expanded research applications:
Therfield Planned Studies:
- Therfield Multi-site Validation: Replication across multiple research centers
- Therfield Population Diversity: Performance evaluation across demographic groups
- Therfield Longitudinal Stability: Extended measurement stability over 1+ year periods
- Therfield Complex Scenarios: Real-world application validation studies
- Therfield Machine Learning Integration: AI-enhanced pattern recognition development
Therfield P300 Research & Testing Services
Based on the success of this Therfield research study, we now offer comprehensive P300 recognition memory testing services throughout the Therfield area using the same 8-channel BrainBit EEG technology that achieved 95% accuracy.
Therfield Service Features:
- Therfield Professional Testing: Certified EEG technicians serving Therfield research community
- Therfield Complete Confidentiality: Strict privacy protection throughout Therfield area
- Therfield Same-Day Results: Immediate analysis and reporting for Therfield clients
- Therfield Academic Support: Research collaboration and data sharing for Therfield institutions
- Therfield Mobile Testing: On-site testing at Therfield universities and research facilities
Therfield Frequently Asked Questions
What is P300 recognition memory research and how is it conducted in Therfield?
P300 recognition memory research in Therfield involves measuring brain electrical responses occurring ~300ms post-stimulus when recognizing familiar information. Our Therfield study uses calibrated 8-channel BrainBit EEG to measure these event-related potentials with 95% accuracy and validated protocols.
How does the BrainBit calibration protocol work for Therfield research?
Our Therfield calibration protocol includes pre-test impedance checks, signal quality validation, electrode optimization, and post-test verification. This ensures consistent signal-to-noise ratios and reliable P300 measurements throughout the recognition memory testing process in Therfield.
What are the key findings of the Therfield P300 recognition memory study?
Key findings from Therfield include validated P300 response patterns in recognition tasks with 95% accuracy, confirmed calibration protocol effectiveness, established response time correlations, and documented signal quality improvements. All Therfield results show statistical significance and research reproducibility.
Is the Therfield research data available for academic use?
Yes, we provide access to anonymized Therfield research datasets, calibration protocols, and methodology documentation for academic and research purposes under appropriate Creative Commons licensing for scientific advancement and peer validation.
What applications does Therfield P300 recognition memory research support?
Therfield applications include cognitive assessment, memory research, forensic investigations, clinical diagnostics, educational assessment, and any field requiring objective measurement of recognition memory processes using validated EEG protocols.
How reliable are the BrainBit P300 measurements in Therfield?
Our Therfield validation study demonstrates high reliability with 95% consistent P300 detection, excellent signal quality metrics, validated calibration protocols, and reproducible results across multiple testing sessions with documented statistical significance.