What is the pattern of 1 to 1.5 Hz activity with superimposed 8 to 20 Hz activity seen in neonates called?

The pattern of 1 to 1.5 Hz activity with superimposed 8 to 20 Hz activity seen in neonates is referred to as a delta brush. This characteristic pattern is notable for its combination of slow delta waves and faster theta or beta activity. It is frequently observed during sleep in infants and reflects a developmental stage of the brain, playing a crucial role in neural maturation and development.

The slow rhythmic delta waves represent the brain's background activity, while the superimposed faster activity, often described as "brush" like, may indicate bursts of cortical activation that are essential for processes such as synaptic plasticity and brain connectivity.

Understanding the presence and significance of delta brushes in neonates is critical for technologists, as recognizing these patterns can aid in differentiating normal development from potential pathological conditions.