Memorial Day Offer

Discover your mystery discount!

Delta wave

Delta Wave Characteristics and Sleep Patterns: – Delta waves were first described in the 1930s by W. Grey Walter. – Delta waves are quantified using […]

« Back to Glossary Index

Delta Wave Characteristics and Sleep Patterns:
– Delta waves were first described in the 1930s by W. Grey Walter.
– Delta waves are quantified using quantitative electroencephalography with boundaries between 0.5 and 2Hz.
– They dominate stage 4 sleep and appear in stage 3.
– Delta waves are detected by EEG and account for over 20% of EEG activity during N3 slow-wave sleep.
– Delta waves are high-amplitude brain waves with a frequency range of 0.5 to 4 Hz.
– Delta waves play a crucial role in sleep architecture, particularly in deep sleep stages.

Neurophysiology and Development of Delta Waves:
– Delta waves can arise in the thalamus or cortex and are mediated by T-type calcium channels.
– Neurons are inhibited by GABA during delta wave sleep.
– Delta wave activity is more prominent in infants and declines during adolescence, being absent by age 75.
– Temporal delta wave activity increases with age.
– Delta waves are associated with the release of GHRH and prolactin.

Disruptions and Disorders Related to Delta Waves:
– Various disorders exhibit disruptions in delta wave activity, including temporal low-voltage irregular delta waves in ischemic brain diseases.
– Parasomnias are associated with disruptions in slow-wave sleep, where total sleep deprivation can increase delta wave activity.
– Disorders like narcolepsy, depression, anxiety, OCD, ADHD, juvenile chronic arthritis, and Postural orthostatic tachycardia syndrome are linked to disrupted delta-wave activity.

Delta Wave in Neurological Disorders and EEG Studies:
– Delta waves have been linked to epilepsy, schizophrenia, and chronic arthritis in children.
– EEG-defined subtypes of children with ADHD show distinct delta wave patterns.
– EEG can help locate cerebral tumors based on delta wave patterns.
– Delta wave abnormalities have been observed in schizophrenia and epileptic seizures.

Delta Wave in Pharmacology and Brain Imaging Studies:
– Drugs like delta sleep-inducing peptide, alcohol, gabapentin, and GHB can alter delta wave activity.
– MRI can associate ischemic lesions with temporal delta wave patterns.
– Cortical regional differences in delta waves during sleep have been observed in schizophrenia.
– EEG findings have been reported in relation to the administration of delta sleep-inducing peptide, impacting brain imaging studies.

Delta wave (Wikipedia)

Delta waves are high amplitude neural oscillations with a frequency between 0.5 and 4 hertz. Delta waves, like other brain waves, can be recorded with electroencephalography (EEG) and are usually associated with the deep stage 3 of NREM sleep, also known as slow-wave sleep (SWS), and aid in characterizing the depth of sleep. Suppression of delta waves leads to inability of body rejuvenation, brain revitalization and poor sleep.

A delta wave, recorded in a one-second sample of an EEG (electroencephalograph). This particular wave has a frequency of around 1 Hz.
This is a screenshot of a patient during Slow Wave Sleep (stage 3). The high amplitude EEG is highlighted in red. This screenshot represents a 30-second epoch (30 seconds of data).
« Back to Glossary Index
This site uses cookies to offer you a better browsing experience. By browsing this website, you agree to our use of cookies.