Magnetic fields and the habenular complex

Sandyk, Reuven; Anninos, P. A.; Tsagas, N.

doi:10.3109/00207459108985981

Cited by 9 publications

(5 citation statements)

References 17 publications

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“…It may be relevant that rod vision may allow enhanced discernment or even novel detection of stimulus patterns within the environment to which the experient may be oblivious during white light conditions. Concurrent factors may include stimulation of the habenular complex, which may have multiple inputs into the pineal organ (Sandyk, Anninos, & Tsagas, 1991). Enhanced prolactin release due to inhibition of dopamine pathways by magnetic fields would be consistent with the less frequently known report of increased sexual desire (Kruger, Haake, Hartmann, Schedlowski, & Exton, 2002) or sexual arousal during application of the types of magnetic field patterns employed in the present study.…”

supporting

confidence: 75%

Red Light Facilitates the Sensed Presence Elicited by Application of Weak, Burst-Firing Magnetic Fields Over the Temporal Lobes

Meli

Persinger

2009

International Journal of Neuroscience

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To test the hypothesis that the wavelength (color) of ambient lightning should modulate experiences of a sensed presence when the right hemisphere was stimulated by weak, burst-firing magnetic fields, volunteers were exposed for 30 min to this condition or to a sham field while they sat (eyes opened) in either dim red, green, or white light. Subjects exposed to the magnetic field reported significantly more visual sensations along the left side in red light and along the right side in green light. The significant interaction between ambient color and the field treatment was due to the marked increase in experiences of dizziness, sensed presence, "ego-alien" thoughts, and detachment from the body and "being somewhere else" for subjects exposed to the magnetic field while sitting in red light. The concurrence of entoptic images experienced within the upper left peripheral visual field and the sensed presence supported the hypothesis that both are associated with the intrusion of right hemispheric processes into left hemispheric awareness.

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supporting

confidence: 75%

Red Light Facilitates the Sensed Presence Elicited by Application of Weak, Burst-Firing Magnetic Fields Over the Temporal Lobes

Meli

Persinger

2009

International Journal of Neuroscience

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“…The administration of antipsychotics for treating SCH has been shown to increase glucose metabolism in the LHb (Dedeurwaerdere et al, 2011 ), and these results further support our findings in the current study. The volume reduction, hyper-calcification and hypo-metabolism together suggest that the activity of the Hb may be reduced in SCH and that this dysfunction may lead to the development of SCH-like symptoms by enhancing midbrain dopaminergic activity (Sandyk et al, 1991 ). Additionally, the reduced volume of the Hb has also been reported in patients with behavioral variant frontotemporal lobe dementia (Bocchetta et al, 2016 ), which is associated with SCH-like hallucinations, delusions and cognitive and behavioral abnormalities.…”

Section: Discussionmentioning

confidence: 99%

Altered Volume and Functional Connectivity of the Habenula in Schizophrenia

Zhang

Wang

Luan

et al. 2017

Front. Hum. Neurosci.

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The pathogenesis of schizophrenia (SCH) is associated with the dysfunction of monoamine neurotransmitters, the synthesis and release of which are mainly regulated by a key structure, the habenular (Hb) nucleus. However, little is known regarding whether SCH is associated with structural or functional alterations in the Hb. In this study, we combined structural and resting-state functional magnetic resonance imaging to investigate the changes in volume and functional connectivity of the Hb in 15 patients with SCH vs. 16 age- and gender-matched healthy controls (HCs). Morphologically, the absolute volume of the bilateral Hb was significantly lower in the SCH patients than in the HCs. Functionally, the bilateral Hb showed significantly enhanced functional connectivity with the left medial prefrontal cortex (mPFC) in the SCH patients. Additionally, the SCH patients exhibited increased functional connectivity of the left Hb with the left lingual gyrus and right inferior frontal gyrus (IFG). A further exploratory analysis revealed that the SCH patients showed increased functional connectivity between the right Hb and several subcortical regions related to dopaminergic pathways, including the left ventral striatum, caudate and putamen. Finally, the increased functional connectivity of the right Hb with the mPFC was positively correlated with the Brief Psychiatric Rating Scale (BPRS) scores in the patients. Together, these results suggest that the altered volume and functional connectivity of the Hb may be involved in the pathogenesis of SCH and thus that the Hb may serve as a potential target in developing new therapeutic strategies in SCH.

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“…Several studies by Sandyk and his colleagues (Sandyk et al, 1991;1992) have indicated that brief exposures to extremely low frequency magnetic fields within the picoT range alter disease states. We (Persinger, et al, 1991;Richards, et al, 1993) have found that application (across the temporal lobes) of 1 microT (10 mG) magnetic fields with burst firing-like wave structures can generate conscious experiences that reflect activation of the appropriate left or right hemisphere.…”

Section: Discussionmentioning

confidence: 99%

Enhanced hypnotizability by cerebrally applied magnetic fields depends upon the order of hemispheric presentation: An anistropic effect

Tiller

Persinger²

1994

International Journal of Neuroscience

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A significant alteration in the hypnotizability of normal subjects after brief (15 min) exposures to weak (1 microT) pulsed magnetic fields over the temporal lobes was determined by the serial order of hemispheric stimulation. Only subjects who received the right hemispheric stimulation first displayed significantly elevated hypnosis induction profile scores (effect size equivalent to a correlation of 0.41). Implications for a technology that can: a) modify hypnotizability, b) encourage the consolidation of quasiexperiences that are reconstructed as autobiographical memory, and c) change the sense of self, are discussed.

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Magnetic fields and the habenular complex

Cited by 9 publications

References 17 publications

Red Light Facilitates the Sensed Presence Elicited by Application of Weak, Burst-Firing Magnetic Fields Over the Temporal Lobes

Red Light Facilitates the Sensed Presence Elicited by Application of Weak, Burst-Firing Magnetic Fields Over the Temporal Lobes

Altered Volume and Functional Connectivity of the Habenula in Schizophrenia

Enhanced hypnotizability by cerebrally applied magnetic fields depends upon the order of hemispheric presentation: An anistropic effect

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