Scientific corner

Discover the research behind Halyzia® and its clinical validation

Picture of the scientific article

Detecting fast-ripples on both micro- and macro-electrodes in epilepsy: a wavelet-based CNN detector

Gardy L, Curot J, Valton L, Berthier L, Barbeau EJ, & Hurter C.
Journal of Neuroscience Methods, 2025 Mar:415:110350.
DOI: 10.1016/j.jneumeth.2024.110350.

Signal analysis: epileptic biomarkers

Filtering your SEEG signal 

June 8 2026

Noise in stereroelectroencephalography (SEEG) signal can arise from several sources, including non-physiological noise. Part of this noise is attenuated during the recording, but some of it remains in the recorded signals, which is why filtering might be necessary for your SEEG signals…

Picture of HFO

Introduction
to HFOs

May 26 2025

HFOs are brief, high-frequency oscillations observed in EEG recordings. They are typically classified into two main categories: ripples (80–200 Hz) and fast ripples (200–600 Hz)...

An illustration showing how to validate IEEG biomarkers

Why validating iEEG biomarker detectors is so difficult

January 7 2026

Interictal biomarkers of epilepsy such as spikes and high-frequency oscillations (HFOs) are increasingly being studied as clinical tools to guide epilepsy surgery…

Combined interictal biomarkers

Combined interictal biomarkers

Oct. 16 2025

Detecting combined interictal biomarkers in human iEEG recordings - A new tool for clinicians within Halyzia ®

Other resources

Screenshot of Halyzia

Why the name Halyzia®?

Sept. 15 2025

Legend has it that the mysterious blobs marking the fast-ripples on the normalized scalograms (Figure 1) bore an uncanny resemblance to the delicate colors of a ladybird

Picture of a scalogram with a heart shape

Funny scalograms

Sept. 15 2025

Sometimes, scalograms show weird and funny shapes.

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