Reference Library
HALO stands on decades of peer-reviewed science. Filter the foundational literature by field.

Brain–computer interfaces for communication and control
Wolpaw, J. R., et al. (2002). Clinical Neurophysiology.
Foundational framework defining BCI signal acquisition, feature translation, and control.
BCIÜber das Elektrenkephalogramm des Menschen
Berger, H. (1929). Archiv für Psychiatrie.
First recording of the human EEG, establishing non-invasive neural measurement.
EEGElectroencephalography: Basic Principles, Clinical Applications, and Related Fields
Niedermeyer, E., & da Silva, F. L. (2004). Lippincott Williams & Wilkins.
Standard reference on EEG rhythms and clinical interpretation.
EEGEEG alpha and theta oscillations reflect cognitive and memory performance
Klimesch, W. (1999). Brain Research Reviews.
Links alpha/theta dynamics to attention and memory.
NeuroscienceWearable EEG and beyond
Casson, A. J. (2019). Biomedical Engineering Letters.
Reviews dry-electrode wearable EEG feasibility and challenges.
BCIClosed-loop brain training: the science of neurofeedback
Sitaram, R., et al. (2017). Nature Reviews Neuroscience.
Comprehensive review of neurofeedback mechanisms and evidence.
NeurofeedbackEEG-neurofeedback for optimising performance
Gruzelier, J. H. (2014). Neuroscience & Biobehavioral Reviews.
Performance applications of neurofeedback in healthy populations.
NeurofeedbackSelf-regulation of frontal-midline theta via neurofeedback
Enriquez-Geppert, S., et al. (2017). Frontiers in Human Neuroscience.
Demonstrates volitional control of frontal theta.
NeurofeedbackAn integrative theory of prefrontal cortex function
Miller, E. K., & Cohen, J. D. (2001). Annual Review of Neuroscience.
Defines prefrontal cortex role in executive control.
NeuroscienceThe Prefrontal Cortex
Fuster, J. M. (2015). Academic Press.
Authoritative monograph on prefrontal organization and function.
NeuroscienceRhythms of the Brain
Buzsáki, G. (2006). Oxford University Press.
Synthesis of neural oscillations across scales.
NeuroscienceNeuroergonomics: The Brain at Work
Parasuraman, R., & Rizzo, M. (2007). Oxford University Press.
Foundational text on measuring cognition in real-world work.
Human FactorsLarge-scale brain networks and psychopathology: a unifying triple network model
Menon, V. (2011). Trends in Cognitive Sciences.
Default Mode, Central Executive, and Salience network interactions.
NeuroscienceA review of classification algorithms for EEG-based BCIs: a 10-year update
Lotte, F., et al. (2018). Journal of Neural Engineering.
Survey of EEG classification methods and best practices.
AIAn overview of heart rate variability metrics and norms
Shaffer, F., & Ginsberg, J. P. (2017). Frontiers in Public Health.
Reference for HRV features such as RMSSD and SDNN.
Human FactorsDeep learning with convolutional neural networks for EEG decoding
Schirrmeister, R. T., et al. (2017). Human Brain Mapping.
Demonstrates CNN-based EEG decoding performance.
AIDeep learning-based electroencephalography analysis: a systematic review
Roy, Y., et al. (2019). Journal of Neural Engineering.
Maps deep learning approaches across EEG tasks.
AIThe cost of interrupted work: more speed and stress
Mark, G., et al. (2008). CHI Conference.
Quantifies attention fragmentation and cognitive cost.
Human FactorsAutoreject: automated artifact rejection for MEG and EEG data
Jas, M., et al. (2017). NeuroImage.
Reproducible artifact handling for EEG pipelines.
EEGPower failure: why small sample size undermines reliability of neuroscience
Button, K. S., et al. (2013). Nature Reviews Neuroscience.
Motivates rigorous sample sizing in validation.
NeuroscienceThe preregistration revolution
Nosek, B. A., et al. (2018). PNAS.
Pre-registration to reduce bias and false positives.
NeuroscienceTowards new human rights in the age of neuroscience and neurotechnology
Ienca, M., & Andorno, R. (2017). Life Sciences, Society and Policy.
Proposes mental privacy and cognitive liberty rights.
EthicsFour ethical priorities for neurotechnologies and AI
Yuste, R., et al. (2017). Nature.
Privacy, agency, identity, and fairness priorities.
EthicsNeuroethical considerations: cognitive liberty and converging technologies
Sententia, W. (2004). Annals of the NY Academy of Sciences.
Defines cognitive liberty as a guiding principle.
EthicsSoftware as a Medical Device (SaMD): clinical evaluation guidance
U.S. FDA (2023). FDA Guidance.
Regulatory framing for software-based health claims.
RegulationGeneral Data Protection Regulation (GDPR)
European Parliament (2016). EU Regulation 2016/679.
Data protection requirements relevant to biometric data.
RegulationIndependent component analysis of electroencephalographic data
Makeig, S., et al. (1996). NeurIPS.
ICA for separating artifacts and sources in EEG.
EEGReal-time neuroimaging and cognitive monitoring using wearable dry EEG
Mullen, T. R., et al. (2015). IEEE TBME.
Real-time wearable EEG with artifact subspace reconstruction.
BCIElectrodermal Activity
Boucsein, W. (2012). Springer.
Definitive reference on EDA tonic/phasic measurement.
Human FactorsPersonalized machine learning for wearable physiological signals
Dunn, J., et al. (2020). npj Digital Medicine.
Per-user calibration improves wearable model reliability.
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