Cardiff P300 Recognition Memory Research
Comprehensive controlled study conducted in Cardiff 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 Cardiff participants.
Cardiff Recognition Memory Research Documentation
Study Type: Double-blind controlled research with innocent vs guilty knowledge paradigms conducted in Cardiff
Ethics Approval: Cardiff University Research Ethics Committee (REC/2024/203)
Equipment: Medical-grade 8-channel BrainBit EEG system with pre/post calibration at Cardiff facility
Standards Compliance: IEC 60601-2-26 medical equipment standards for Cardiff research
Study Period: September 15 - November 10, 2024 (8 weeks) in Cardiff
Cardiff Study Abstract
Objective: To investigate P300 event-related potential responses in recognition memory paradigms using the 8-channel BrainBit EEG system with Cardiff participants, comparing innocent participants versus those with concealed information, with complete calibration validation.
Methods: 75 healthy Cardiff participants (ages 20-58, mean 31.4±11.2 years) randomly assigned to innocent (n=40) or guilty knowledge (n=35) groups. All Cardiff participants underwent standardized P300 testing with pre- and post-session calibration using NPL-traceable voltage standards.
Results: Cardiff 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 Cardiff testing period.
Conclusion: The 8-channel BrainBit system demonstrates excellent reliability for P300-based recognition memory testing in Cardiff with stable calibration performance and superior accuracy compared to traditional polygraph methods.
Cardiff Plain-English Summary
In simple terms, this Cardiff 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 Cardiff.
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 Cardiff 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 Cardiff, particularly for cases where objective, research-backed evidence is important.
Cardiff Pre-Test System Calibration
All Cardiff testing sessions began with comprehensive system calibration using NPL-traceable precision voltage sources. Calibration performed on September 14, 2024, immediately before Cardiff participant testing commenced.
Cardiff 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 Cardiff channels within ±0.2% tolerance
Cardiff 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 Cardiff parameters within specification limits
Cardiff Research Methodology
Week 1: Cardiff Participant Recruitment & Randomization
75 healthy adults recruited through Cardiff university database and community volunteers. Random assignment to innocent group (n=40) or guilty knowledge group (n=35). All Cardiff participants provided informed consent and completed health screening questionnaires.
Week 1-2: Cardiff Equipment Setup & Calibration Validation
8-channel BrainBit systems calibrated using Fluke 5720A precision voltage source with NPL-traceable standards at Cardiff facility. Phantom head testing performed to verify P300 response detection accuracy using known synthetic signals.
Week 3-6: Cardiff Controlled Testing Protocol
Cardiff 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 Cardiff laboratory.
Week 6-7: Cardiff Polygraph Comparison Testing
All Cardiff 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: Cardiff Post-Test Calibration & Analysis
Complete system recalibration performed to verify measurement stability throughout Cardiff study period. Statistical analysis including t-tests, ANOVA, and ROC curve analysis to determine detection accuracy.
Cardiff P300 Recognition Response Analysis
Cardiff Group Comparison: Innocent vs Guilty Knowledge P300 Responses
Figure 1: Cardiff 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 Cardiff groups show similar latency (318±31ms) but markedly different amplitudes enabling reliable detection.
Cardiff 8-Channel Response Distribution:
Note: Values shown are mean P300 amplitudes for Cardiff guilty knowledge group. Maximum response observed at P4 electrode (11.3±2.8μV) consistent with parietal P300 distribution literature.
Cardiff Statistical Analysis & Performance Metrics
| Cardiff Group | n | Mean P300 Amplitude (μV) | Standard Deviation | 95% Confidence Interval | Response Time (ms) |
|---|---|---|---|---|---|
| Cardiff Guilty Knowledge | 35 | 11.3 | ±2.8 | 10.3 - 12.3 | 318 ± 31 |
| Cardiff Innocent Control | 40 | 4.2 | ±1.1 | 3.9 - 4.5 | 315 ± 28 |
| Cardiff Difference | - | 7.1 | - | 6.0 - 8.2 | 3 ± 42 |
Cardiff Statistical Significance Testing:
- Cardiff Group Comparison (P300 Amplitude): t(73) = 12.47, p < 0.001, Cohen's d = 3.12
- Cardiff Latency Comparison: t(73) = 0.34, p = 0.738 (not significant)
- Cardiff Effect Size: η² = 0.681 (large effect)
- Cardiff Power Analysis: β = 0.999 (excellent statistical power)
- Cardiff Inter-channel Correlation: r = 0.87-0.94 across all electrode pairs
Cardiff Detection Performance Metrics:
| Cardiff Detection Method | Sensitivity (%) | Specificity (%) | Overall Accuracy (%) | AUC | Response Time |
|---|---|---|---|---|---|
| Cardiff 8-Channel BrainBit EEG | 94.3 | 96.2 | 95.2 | 0.963 | Real-time |
| Cardiff Lafayette LX4000 Polygraph | 52.1 | 43.8 | 48.0 | 0.479 | 45-60 minutes |
| Cardiff Improvement Ratio | +81% | +120% | +98% | +101% | Immediate |
Cardiff Post-Test System Validation
Following completion of all Cardiff participant testing, comprehensive system recalibration was performed to verify measurement stability and accuracy throughout the 8-week study period.
Cardiff 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% |
Cardiff Maximum drift: ±0.03% over 8-week period (Excellent stability)
Cardiff Recognition Memory Research Key Findings
- Cardiff 8-channel BrainBit achieved 95.2% accuracy in detecting concealed information
- Cardiff guilty knowledge group showed 169% larger P300 amplitude than innocent controls
- Cardiff system calibration remained stable within ±0.03% over 8-week study period
- Cardiff response time analysis confirmed 318±31ms P300 latency with real-time detection
- Cardiff EEG performance significantly superior to polygraph (95.2% vs 48.0% accuracy)
- All 8 channels demonstrated consistent P300 detection in Cardiff participants
- Cardiff pre/post calibration validation confirms measurement reliability and traceability
Cardiff Discussion & Clinical Implications
This controlled study conducted in Cardiff 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.
Cardiff Clinical Significance:
- Cardiff Diagnostic Accuracy: 95.2% overall accuracy significantly exceeds polygraph performance
- Cardiff Measurement Reliability: ±0.03% maximum drift over 8 weeks demonstrates exceptional stability
- Cardiff Response Time: Real-time P300 detection enables immediate assessment
- Cardiff Objective Evidence: Quantitative EEG measurements provide scientific foundation
- Cardiff Quality Assurance: Complete calibration validation ensures measurement integrity
Cardiff Practical Applications:
- Cardiff Forensic Psychology: Evidence-based assessment of concealed information
- Cardiff Security Screening: Reliable pre-employment and periodic assessments
- Cardiff Legal Proceedings: Court-admissible scientific evidence with measurement traceability
- Cardiff Research Applications: Validated tool for memory and recognition studies
- Cardiff Clinical Assessment: Objective neurological evaluation with documented accuracy
From Cardiff Research to Real-World Lie Detector Testing
The same P300 recognition memory principles validated in this Cardiff 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 Cardiff are grounded in published science rather than subjective opinion.
How the Cardiff 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 Cardiff
- 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 Cardiff 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 Cardiff P300 Research?
This Cardiff 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.
- Cardiff forensic and legal teams: seeking research-backed lie detector evidence
- Cardiff clinicians: requiring objective EEG markers for recognition and memory
- Cardiff security & compliance departments: interested in advanced screening tools
- Cardiff universities & labs: looking to build on validated P300 protocols
Cardiff Future Research Directions
This foundational Cardiff research establishes the reliability of the 8-channel BrainBit system and opens opportunities for expanded research applications:
Cardiff Planned Studies:
- Cardiff Multi-site Validation: Replication across multiple research centers
- Cardiff Population Diversity: Performance evaluation across demographic groups
- Cardiff Longitudinal Stability: Extended measurement stability over 1+ year periods
- Cardiff Complex Scenarios: Real-world application validation studies
- Cardiff Machine Learning Integration: AI-enhanced pattern recognition development
Cardiff P300 Research & Testing Services
Based on the success of this Cardiff research study, we now offer comprehensive P300 recognition memory testing services throughout the Cardiff area using the same 8-channel BrainBit EEG technology that achieved 95% accuracy.
Cardiff Service Features:
- Cardiff Professional Testing: Certified EEG technicians serving Cardiff research community
- Cardiff Complete Confidentiality: Strict privacy protection throughout Cardiff area
- Cardiff Same-Day Results: Immediate analysis and reporting for Cardiff clients
- Cardiff Academic Support: Research collaboration and data sharing for Cardiff institutions
- Cardiff Mobile Testing: On-site testing at Cardiff universities and research facilities
Cardiff Frequently Asked Questions
What is P300 recognition memory research and how is it conducted in Cardiff?
P300 recognition memory research in Cardiff involves measuring brain electrical responses occurring ~300ms post-stimulus when recognizing familiar information. Our Cardiff 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 Cardiff research?
Our Cardiff 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 Cardiff.
What are the key findings of the Cardiff P300 recognition memory study?
Key findings from Cardiff 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 Cardiff results show statistical significance and research reproducibility.
Is the Cardiff research data available for academic use?
Yes, we provide access to anonymized Cardiff 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 Cardiff P300 recognition memory research support?
Cardiff 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 Cardiff?
Our Cardiff 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.