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Calixto Machado

8 papers in the library · 1 citation · publishing 2022-2025

Papers

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The Spectrum of Consciousness on the Borders of Life and Death

Clinical and Translational Neuroscience October 7, 2025 Calixto Machado, G. Leisman

We here delve into the intricate and evolving concepts of brain death and consciousness, particularly at the end of life. We examine the historical and technological advancements that have influenced our understanding of death, such as mechanical ventilation and resuscitation techniques. These developments have challenged traditional definitions of death, leading to the concept of brain death,...

Jahi McMath case: A comprehensive and updated narrative.

World journal of critical care medicine September 9, 2025 Calixto Machado

The Jahi McMath case represents a pivotal moment in the reevaluation of brain death or death by neurological criteria (BD/DNC) and disorders of consciousness. Declared brain dead on December 12, 2013, following surgical complications, Jahi's case became a landmark in challenging conventional BD/DNC definitions. As an independent consultant for the International Brain Research Foundation, I...

DOI: 10.5492/wjccm.v14.i3.107513 (opens in new tab) Full text (opens in new tab) Brain death Disorders of consciousness Electroencephalography Heart rate variability +2

Centering prayer in the treatment of Post-Traumatic Stress Disorder (PTSD)

World Journal of Advanced Research and Reviews January 30, 2025 Yanín Machado, Mauricio Chinchilla, Calixto Machado et al.

Post-traumatic stress disorder (PTSD) is a mental and behavioral disorder that develops from experiencing a traumatic event. A significant proportion of sexual assault survivors develop PTSD. Research indicates that 75% of sexual assault survivors meet the criteria for PTSD one month after the assault. PTSD treatment combines psychotherapy, medication, hypnosis, meditation, and emerging...

GAMMA OSCILLATIONS AND NEAR-DEATH EXPERIENCES

Authorea Preprints September 10, 2024 Calixto Machado preprint

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...

Centering prayer in the treatment of bipolar disorder

World Journal of Advanced Research and Reviews March 30, 2024 Yanín Machado, Mauricio Chinchilla, Robert Hesse et al.

Bipolar Disorder (BD), formerly manic-depressive illness or manic depression, is a lifelong mood disorder and mental health condition that causes intense shifts in mood, energy levels, thinking patterns, and behavior. These shifts can last for hours, days, weeks, or months, interrupting the ability to carry out daily tasks. The condition is manageable with medications, talk therapy, lifestyle...

DOI: 10.30574/wjarr.2024.21.3.0981 (opens in new tab) Full text (opens in new tab) Prayer Bipolar disorder Psychotherapist Religious studies +1

Continuous autonomic nervous system assessment using heart rate variability methodology during near-death and mystical experiences

Zenodo (CERN European Organization for Nuclear Research) November 30, 2022 Calixto Machado, Andrew B. Newberg, Yanín Machado et al. 1 citation preprint

Introduction: We have recently recorded, processed, and published preliminary research (Part I) on brain activity by quantitative electroencephalography (EEG) tomography (QEEGt), comparing separate subjects remembering their near-death experiences (NDEs) and mystical experiences (SCE). Several reports have affirmed that NDE and SCE are related to important functional changes in the autonomic...

DOI: 10.5281/zenodo.7786042 (opens in new tab) Mysticism Autonomic nervous system Heart rate variability Blood pressure +1

Neural correlates of memories of near-death and mystical experiences: Preliminary research

World Journal of Advanced Research and Reviews November 30, 2022 Calixto Machado, Andrew B. Newberg, Yanín Machado et al.

This study compares the critical neural correlates of two altered states of consciousness: near-death experience (NDE) and spiritual contemplative experience (SCE), a.k.a. mystical experience. For Centuries NDE and SCE have been reported by all faiths, including Abrahamic religious contemplatives: Christian mystics, Muslim Sufis, and Jewish Kabbalists. Their anecdotal reports show that both NDE...

Continuous EEG of memories of Near-death and mystical experiences: Preliminary research

World Journal of Advanced Research and Reviews November 11, 2022 Calixto Machado, Andrew B. Newberg, Yanín Machado et al.

We recently recorded, processed, and published brain activity by quantitative electroencephalography (QEEG) and quantitative electroencephalography (QEEGt), comparing separate subjects remembering their near-death experience (NDE) and mystical experience. Our studies refer to a mystical experience as a spiritual contemplative experience (SCE). We found neural and Greyson Scale (GS) correlations...

DOI: 10.30574/wjarr.2022.16.2.1167 (opens in new tab) Full text (opens in new tab) Mysticism Contemplation Quantitative electroencephalography Brain function +1