The range of benign variants includes wicket waves, rhythmic mid-temporal theta of drowsiness (RMTD or RTTD), benign small sharp spikes (BSSS, sometimes denoted BSST for benign small sleep transients), 14 and 6 positive spikes, 6-Hz “phantom” spike and wave, subclinical rhythmic EEG discharge of adults (SREDA), and the midline theta rhythm ...

RMTD (rhythmic midtemporal theta burst of drowsiness) Synonymes: Rhythmic midtemporal discharges, RTTD, psychomotor variant pattern. Does not change in frequency or form, in contrast to an epileptic discharge. RMTD: Rhythmic theta waves right temporal (average)

Rhythmic mid-temporal theta of drowsiness (RMTD) Another example of EEG having very aptly named findings, rhythmic mid-temporal theta of drowsiness (RMT) is seen as sharply contoured, rhythmic theta activity restricted to the temporal regions; it is usually quite short, only a …

2024年10月15日 · RMTD consists of bursts of rhythmic, non-evolving sharp waves in the theta frequency range ( 4-7 Hz), lasting from a few seconds to a few minutes. RMTD typically appears in the mid-temporal regions but may spread parasagittally or to the posterior temporal areas. This can occur unilaterally or bilaterally in an independent manner.

Rarely, HV can activate benign EEG rhythms. Herein, we illustrate two pediatric cases with bursts of rhythmic mid-temporal theta of drowsiness (RMTD), activated by hyperventilation. Continued awareness of this EEG phenomenology and its variations in pediatrics is important in avoiding misdiagnosis of epilepsy.

2024年12月21日 · Rhythmic Mid-Temporal Theta of Drowsiness (RMTD) is a benign EEG pattern typically seen during the transition from wakefulness to sleep. It is characterized by rhythmic theta waves that are short in duration, sharp in contour, and localized to …

For the EEG to have a high diagnostic value and high specificity, it is critical to recognize waveforms that can be mistaken for abnormal patterns. This article describes artifacts, normal rhythms, and normal patterns that are prone to being misinterpreted as abnormal. Artifacts are potentials generated outside the brain.

2024年5月18日 · RMTD or rhythmic midtemporal discharges (previously known as “psychomotor variant”) are less frequent than WS, observed as around 2% of people undergoing EEG (Table 1) . RMTD show sequence of rhythmic theta waves without slow after-wave (Fig. 1 ; Supplementary).

2021年6月1日 · RMTD and mu rhythm may be observed during NREM and REM sleep. Benign EEG variants (BEVs), often referred to as “benign epileptiform variants”, are unusual physiological activities, often with sharp morphology.

2023年7月24日 · 9. Rhythmic Mid-temporal Theta of Drowsiness (RMTD): Previously known as Psychomotor Variant: RMTDs are trains of theta activity that are seen during the sleep-wake transition and are centered around the mid-temporal region and may spread to the anterior and posterior temporal as well as posterior parietal regions.