Electrophysiological studies (EEG) measures the electrical activity of groups of neurons on the surface of the scalp. Study EEG comparing brain activation meditation practitioners in the
long term (11) for a short period of meditation (16) yangi found brain
activation specific patterns according to the subjective feeling of
consciousness thought and happiness experienced by the meditator
(Aftanas and Golocheikine, 2001, 2002, 2000).
In their EEG measures the activity of meditating long-term as applied in the initial stages of Meditation Spirituail Building (MSB Training) showed increased power in the EEG theta frequency band Low activity and alpha, shown especially in the left frontal region.Activation of brain connects with the thought consciousness and bliss during meditation, long-term meditation showed less mental activity, ie less thoughts (IV) and more feelings of happiness (VI) according to their subjective ratings.
In their EEG measures, the long-term meditation showed increased power in the EEG theta frequency band Low activity, which is spoken mainly in the left frontal region. The intensity of mental activity correlated negatively with theta brain activity over central and frontal regions, stating that internal dialogue is more or less associated with activation. Frontal activity theta thought to originate from the frontal and limbic areas such as the anterior cingulate and prefrontal cortex and has been shown to be improved for both affective and attentional states like processing of emotions and sustained attention.
The intensity of the feeling of happiness was positively correlated with theta activity over the left frontal region. This is consistent with evidence of the role of the left frontal lobe in positive emotions whereas the right prefrontal lobe plays a greater role in the negative.There was also increased activation in the alpha power range over the same area, which is thought to reflect a decrease in brain regions that mediate mental effort and external attention. Increased activation in alpha activity has been widely observed in the meditation of different traditions and has been found to correlate with reduced levels of anxiety.
In addition to activation of fronto-parietal theta improved, the authors also found enhanced connectivity band fronto-parietal theta - suggesting the enforcement of attentional networks. The decline in the chaotic dimensional complexity was also observed suggestive of inhibition of the task-irrelevant.
These findings suggest that during meditation, reduced mental activity
is mediated by increased activation of tissue internalized attention
seems to trigger activity in regions that mediate positive emotions
(left frontal cortex) while reducing network associated with external
attention and process irrelevant.
Improved relations between the frontal and parietal as possible is a prerequisite for a general intensification of internalized attention necessary for the induction of a changing area on silence mental meditation.
In conclusion, this study shows that violates the subjective experience of mental silence and positive emotions during meditation show very specific neurophysiological correlates in the activation and connectivity of regions that mediate internalized attention and positive effect.
Reference
Aftanas LI, Golocheikine SA. Aftanas LI, SA Golocheikine. (2001): Human anterior and frontal midline theta and lower alpha reflect emotionally positive state and internalized attention: high-resolution EEG investigation of meditation. (2001): Human and anterior frontal midline theta and lower alpha reflect a positive emotional state and internalized attention: High resolution EEG investigation of meditation. Neuroscience Letters 310 (1): 57-60. Neuroscience Letters 310 (1): 57-60.Aftanas LI, Golocheikine SA. Aftanas LI, SA Golocheikine. (2002): Non-linear dynamic complexity of tea human EEG during meditation. (2002): Non-dynamic linear complexity of human EEG during meditation. Neuroscience Letters 330: 143-146. Neuroscience Letters 330: 143-146.Aftanas LI, Golosheikin SA (2003): Changes in cortical activity in Altered states of consciousness: the study of meditation by high-resolution EEG. Aftanas LI, Golosheikin SA (2003): Changes in cortical activity in altered states of consciousness: the study of meditation with a high-resolution EEG. Human Physiology 29 (2): 143-151 Human Physiology 29 (2): 143-151
In their EEG measures the activity of meditating long-term as applied in the initial stages of Meditation Spirituail Building (MSB Training) showed increased power in the EEG theta frequency band Low activity and alpha, shown especially in the left frontal region.Activation of brain connects with the thought consciousness and bliss during meditation, long-term meditation showed less mental activity, ie less thoughts (IV) and more feelings of happiness (VI) according to their subjective ratings.
In their EEG measures, the long-term meditation showed increased power in the EEG theta frequency band Low activity, which is spoken mainly in the left frontal region. The intensity of mental activity correlated negatively with theta brain activity over central and frontal regions, stating that internal dialogue is more or less associated with activation. Frontal activity theta thought to originate from the frontal and limbic areas such as the anterior cingulate and prefrontal cortex and has been shown to be improved for both affective and attentional states like processing of emotions and sustained attention.
The intensity of the feeling of happiness was positively correlated with theta activity over the left frontal region. This is consistent with evidence of the role of the left frontal lobe in positive emotions whereas the right prefrontal lobe plays a greater role in the negative.There was also increased activation in the alpha power range over the same area, which is thought to reflect a decrease in brain regions that mediate mental effort and external attention. Increased activation in alpha activity has been widely observed in the meditation of different traditions and has been found to correlate with reduced levels of anxiety.
In addition to activation of fronto-parietal theta improved, the authors also found enhanced connectivity band fronto-parietal theta - suggesting the enforcement of attentional networks. The decline in the chaotic dimensional complexity was also observed suggestive of inhibition of the task-irrelevant.
Improved relations between the frontal and parietal as possible is a prerequisite for a general intensification of internalized attention necessary for the induction of a changing area on silence mental meditation.
In conclusion, this study shows that violates the subjective experience of mental silence and positive emotions during meditation show very specific neurophysiological correlates in the activation and connectivity of regions that mediate internalized attention and positive effect.
Reference
Aftanas LI, Golocheikine SA. Aftanas LI, SA Golocheikine. (2001): Human anterior and frontal midline theta and lower alpha reflect emotionally positive state and internalized attention: high-resolution EEG investigation of meditation. (2001): Human and anterior frontal midline theta and lower alpha reflect a positive emotional state and internalized attention: High resolution EEG investigation of meditation. Neuroscience Letters 310 (1): 57-60. Neuroscience Letters 310 (1): 57-60.Aftanas LI, Golocheikine SA. Aftanas LI, SA Golocheikine. (2002): Non-linear dynamic complexity of tea human EEG during meditation. (2002): Non-dynamic linear complexity of human EEG during meditation. Neuroscience Letters 330: 143-146. Neuroscience Letters 330: 143-146.Aftanas LI, Golosheikin SA (2003): Changes in cortical activity in Altered states of consciousness: the study of meditation by high-resolution EEG. Aftanas LI, Golosheikin SA (2003): Changes in cortical activity in altered states of consciousness: the study of meditation with a high-resolution EEG. Human Physiology 29 (2): 143-151 Human Physiology 29 (2): 143-151
Tidak ada komentar:
Posting Komentar