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This study investigated differences in brain activation during meditation between meditators and non-meditators. Fifteen Vipassana meditators (mean practice: 7.9 years, 2h daily) and fifteen non-meditators, matched for sex, age, education, and handedness, participated in a block-design fMRI study that included mindfulness of breathing and mental arithmetic conditions. For the meditation condition (contrasted to arithmetic), meditators showed stronger activations in the rostral anterior cingulate cortex and the dorsal medial prefrontal cortex bilaterally, compared to controls. Greater rostral anterior cingulate cortex activation in meditators may reflect stronger processing of distracting events. The increased activation in the medial prefrontal cortex may reflect that meditators are stronger engaged in emotional processing.
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The aim of this fMRI study was to explore brain structures that are involved in the processing of erotic and disgust-inducing pictures. The stimuli were chosen to trigger approach and withdrawal tendencies, respectively. By adding sadomasochistic (SM) scenes to the design and examining 12 subjects with and 12 subjects without sadomasochistic preferences, we introduced a picture category that induced erotic pleasure in one sample and disgust in the other sample. Since we also presented neutral pictures, all subjects viewed pictures of four different categories: neutral, disgust-inducing, erotic, and SM erotic pictures. The analysis indicated that several brain structures are commonly involved in the processing of disgust-inducing and erotic pictures (occipital cortex, hippocampus, thalamus, and the amygdala). The ventral striatum was specifically activated when subjects saw highly sexually arousing pictures. This indicates the involvement of the human reward system during the processing of visual erotica.
Erkunden
Team
- Vaitl (2)
Eintragsart
Sprache
- Englisch (2)
Thema
- Functional Laterality/physiology
- Adult (2)
- *Affect (1)
- Amygdala/blood supply/metabolism (1)
- Basal Ganglia/blood supply/metabolism (1)
- Brain/*blood supply/metabolism (1)
- *Brain Mapping (1)
- Case-Control Studies (1)
- *Erotica (1)
- Female (2)
- Frontal Lobe/blood supply/*physiology (1)
- Gyrus Cinguli/blood supply/*physiology (1)
- Hemodynamics/physiology (1)
- Hippocampus/blood supply/metabolism (1)
- Humans (2)
- Image Processing, Computer-Assisted/methods (1)
- Magnetic Resonance Imaging (1)
- Magnetic Resonance Imaging/methods (1)
- Male (2)
- Mathematics (1)
- *Meditation (1)
- Mental Processes/*physiology (1)
- Occipital Lobe/blood supply/metabolism (1)
- Oxygen/blood (1)
- Personality (1)
- Personality Inventory (1)
- *Photic Stimulation (1)
- Reward (1)
- Sexual Behavior/physiology (1)
- Thalamus/blood supply/metabolism (1)