Insular cortex activation in a patient with "sensed presence"/ecstatic seizures

Landtblom, Anne‐Marie; Lindehammar, Hans; Karlsson, Henrik; Craig, A. D.

doi:10.1016/j.yebeh.2011.01.031

Cited by 30 publications

(16 citation statements)

References 15 publications

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“…Particularly relevant for the present study is the role of the insular cortex in corporeal awareness (Berlucchi and Aglioti, 1997) and heightened self-awareness (Landtblom et al, 2011). For example, it has been shown that stimulation of the insular cortex triggers illusions of changes in body position and out-of-body-experiences (Penfield and Faulk, 1955), that insular lesions provoke somatic hallucinations (Roper et al, 1993), and that the posterior insula is a critical lesion site in patients suffering from anosognosia for hemiparesis (Cereda et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Meditation-related activations are modulated by the practices needed to obtain it and by the expertise: an ALE meta-analysis study

Tomasino¹,

Fregona²,

Škrap³

et al. 2013

Front. Hum. Neurosci.

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The brain network governing meditation has been studied using a variety of meditation practices and techniques practices eliciting different cognitive processes (e.g., silence, attention to own body, sense of joy, mantras, etc.). It is very possible that different practices of meditation are subserved by largely, if not entirely, disparate brain networks. This assumption was tested by conducting an activation likelihood estimation (ALE) meta-analysis of meditation neuroimaging studies, which assessed 150 activation foci from 24 experiments. Different ALE meta-analyses were carried out. One involved the subsets of studies involving meditation induced through exercising focused attention (FA). The network included clusters bilaterally in the medial gyrus, the left superior parietal lobe, the left insula and the right supramarginal gyrus (SMG). A second analysis addressed the studies involving meditation states induced by chanting or by repetition of words or phrases, known as “mantra.” This type of practice elicited a cluster of activity in the right SMG, the SMA bilaterally and the left postcentral gyrus. Furthermore, the last analyses addressed the effect of meditation experience (i.e., short- vs. long-term meditators). We found that frontal activation was present for short-term, as compared with long-term experience meditators, confirming that experts are better enabled to sustain attentional focus, rather recruiting the right SMG and concentrating on aspects involving disembodiment.

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Section: Discussionmentioning

confidence: 99%

Meditation-related activations are modulated by the practices needed to obtain it and by the expertise: an ALE meta-analysis study

Tomasino¹,

Fregona²,

Škrap³

et al. 2013

Front. Hum. Neurosci.

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“…Neuroimaging research on ecstatic epileptic seizures provides strong support for this hypothesis. These studies show hyperactivity of the right anterior insula during feelings of a ''sensed presence,'' certainty, heightened self-awareness, and ecstatic bliss (Landtblom, Lindehammar, Karlsson, & Craig, 2011;Picard, in press;), all of which have been reported by experienced meditators, as well.…”

Section: Dmn Meditation and Dopaminementioning

confidence: 84%

Bliss and authenticity: a commentary on target article by Pat Sharp

Josipovic

2013

Religion, Brain & Behavior

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“…Furthermore, activation of the left anterior insular cortex was reported in subjects hearing pleasant music, seeing a smile, and experiencing joy [14]. Clinical neurophysiologic studies demonstrated that intensive positive feelings in ecstatic seizures can originate from the left anterior insula, a region that has been suggested to engender self-awareness associated with positive feelings [15,16]. In addition, it has been proposed that the right anterior insular cortex is closely associated with negative emotion, while the left anterior insular cortex is associated with positive emotion [14].…”

Section: Discussionmentioning

confidence: 99%

Increased left anterior insular and inferior prefrontal activity in post-stroke mania

et al. 2012

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BackgroundPost-stroke mania is an infrequent complication after stroke, and the mechanisms underlying this disorder remain unclear. Although a contralesional release phenomenon has been implicated in post-stroke mania, empirical findings are lacking.Case presentationWe present a case report of post stroke mania. Single photon emission tomography (SPECT) was performed twice, during the manic state and during the remitted euthymic state. The first SPECT study performed during the manic state demonstrated hypoperfusion in the right temporal and frontal regions due to right putaminal hemorrhage. It also showed hyperperfusion in the inferior lateral prefrontal lobe, the temporal lobe, and the medial and lateral parts of the parietal lobe in the left hemisphere. The second SPECT study performed during the euthymic state demonstrated moderate improvement in the hypoperfusion in the right fronto-temporal regions. Furthermore, compared to the findings on the first SPECT study, the second study showed that the focal hyperperfusion in the anterior insular cortex, inferior lateral prefrontal lobes, and superior-middle temporal gyrus in the left hemisphere had vanished.ConclusionIncreased left inferior prefrontal and anterior insular activity and reduced extensive right fronto-temporal lobe activity are involved in the development of post-stroke mania.

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Insular cortex activation in a patient with "sensed presence"/ecstatic seizures

Cited by 30 publications

References 15 publications

Meditation-related activations are modulated by the practices needed to obtain it and by the expertise: an ALE meta-analysis study

Meditation-related activations are modulated by the practices needed to obtain it and by the expertise: an ALE meta-analysis study

Bliss and authenticity: a commentary on target article by Pat Sharp

Increased left anterior insular and inferior prefrontal activity in post-stroke mania

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