GAMMA OSCILLATIONS AND NEAR-DEATH EXPERIENCES
Authorea Preprints September 10, 2024 preprint DOI: 10.22541/au.172594293.30347638/v1 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Case study Case report |
|---|---|
| Sample size | 1 |
| Population | A patient who suffered a heart attack (myocardial infarction) and cardiac arrest |
| Measures | continuous EEG (cEEG), ECG |
| Topics | Near-death experience |
| Key findings | In a single patient monitored with continuous EEG, gamma activity was dominant throughout the recording and persisted beyond ventricular fibrillation and cardiac arrest, despite ECG evidence suggesting cerebral blood flow was insufficient before the arrest. The author proposes that such gamma oscillations may relate to the vivid visual experiences reported during near-death experiences, while cautioning that this does not yet definitively explain them. |
Abstract
Recent studies have indicated that there is an increment in EEG gamma activity following cardiac arrest. Gamma oscillations, which are high-frequency brain waves (30-90 Hz), have been linked to various cognitive functions and states of consciousness. The synchronous firing of neurons in the gamma-band has been proposed to bind multiple features of an object. These results recalled me that recent studies have shown that these oscillations may also play a role in near-death experiences (NDEs), particularly in the context of visual hallucinations. During NDEs, individuals often report vivid visual experiences, such as seeing bright lights or deceased loved ones. We recently studied a patient who suffered a heart infarct, using our continuous EEG monitoring system (cEEG). Notably, Gamma activity was dominant throughout the recording and persisted beyond ventricular fibrillation (VF) and cardiac arrest (CA)t. Monitoring from the initial clinical symptoms indicated that ECG activity was insufficient for adequate cerebral blood flow prior to VF and CA.. It is important to note that while these observations are compelling, they do not yet provide a definitive explanation for NDEs.
Comparable studies
Other case reports and case series on near-death experience, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Near-Death Experiences in India Individuals in India who reported near-death experiences | 1986 | Case study | n = 16 |
| The Near-Death Experience as a Focus of Clinical Attention Patients presenting with near-death experience-related problems | 1997 | Case study | n = 4 |
| A prospectively studied near-death experience with corroborated out-of-body perceptions and unexplained healing. A person who had a near-death experience | 2006 | Case report | n = 1 |
| Verified account of near-death experience in a physician who survived cardiac arrest. A 32-year-old female physician experiencing childbirth | 2020 | Case study | n = 1 |
| This is your brain on death: a comparative analysis of a near-death experience and subsequent 5-Methoxy-DMT experience. An individual who had a near-death experience during a coma caused by bacterial... | 2023 | Case study | n = 1 |