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

Sometimes, scalograms show weird and funny shapes.

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). In some cases, high-gamma activity (60–120 Hz) and very fast oscillations (600–2000 Hz or higher) are also included under the broader term HFOs (Figure 1).