ScienceDaily (May 10, 2007) — Everyday experience and psychology research both indicate that paying close attention to one thing can keep you from noticing something else.
However, a new study from the University of Wisconsin-Madison suggests that attention does not have a fixed capacity - and that it can be improved by directed mental training, such as meditation.
Seeing and mentally processing something takes time and effort, says psychology and psychiatry professor Richard Davidson of the UW-Madison School of Medicine and Public Health and the Waisman Center. Because a person has a finite amount of brainpower, paying close attention to one thing may mean the tradeoff of missing something that follows shortly thereafter. For example, when two visual signals are shown a half-second apart, people miss the second one much of the time.
"The attention momentarily goes off-line," Davidson says. "Your attention gets stuck on the first target, then you miss the second one." This effect is called "attentional blink," as when you blink your eyes, you are briefly unaware of visual signals.
But, he adds, the ability to occasionally catch the second signal suggests that this limitation is not strictly physical, but that it may be subject to some type of mental control.
Led by postdoctoral fellow Heleen Slagter, Davidson's research group in the Waisman Laboratory for Brain Imaging and Behavior recruited subjects interested in meditation to study whether conscious mental training can affect attention. "Meditation is a family of methods designed to facilitate regulation of emotion and attention," says Davidson.
The new study, which appears online May 8 in the journal PLoS Biology, examined the effects of three months of intensive training in Vipassana meditation, which focuses on reducing mental distraction and improving sensory awareness.
Volunteers were asked to look for target numbers that were mixed into a series of distracting letters and quickly flashed on a screen. As subjects performed the task, their brain activity was recorded with electrodes placed on the scalp. In some cases, two target numbers appeared in the series less than one-half second apart - close enough to fall within the typical attentional blink window.
The research group found that three months of rigorous training in Vipassana meditation improved people's ability to detect a second target within the half-second time window. In addition, though the ability to see the first target did not change, the mental training reduced the amount of brain activity associated with seeing the first target. "The decrease [of brain activity associated with the first target] strongly predicted the accuracy of their ability to detect the second target," Davidson says.
The results of the study show that devoting fewer neural resources to the first target leaves enough left over to attend to another target that follows shortly after it, he says.
Because the subjects were not meditating during the test, their improvement suggests that prior training can cause lasting changes in how people allocate their mental resources. "Their previous practice of meditation is influencing their performance on this task," Davidson says. "The conventional view is that attentional resources are limited. This shows that attention capabilities can be enhanced through learning."
The finding that attention is a flexible skill opens up many possibilities, says Davidson. For example, he suggests, "Attention training is worth examining for disorders with attentional components, like attention deficit hyperactivity disorder."
Thursday, April 1, 2010
mindfulness from wikipedia
Examples from contemplative and daily life
Paying close attention to the present experience - the beginning of Mindfulness practice
Buddhists hold that over 2500 years ago, Buddha provided guidance on establishing mindfulness. Right mindfulness (often termed Right meditation) involves bringing one's awareness to focus on experience within the mind at the present moment (from the past, the future, or some disconnected train of thought). By paying close attention to the present experience, practitioners begin to see both inner and outer aspects of reality as aspects of the mind. Internally, one sees that the mind is continually full of chattering with commentary or judgement. By noticing that the mind is continually making commentary, one has the ability to carefully observe those thoughts, seeing them for what they are without aversion or judgment. Those practicing mindfulness realize that "thoughts are just thoughts." One is free to release a thought ("let it go") when one realizes that the thought may not be concrete reality or absolute truth. Thus, one is free to observe life without getting caught in the commentary. Many "voices" or messages may speak to one within the "vocal" (discursive) mind. It is important to be aware that the messages one hears during "thinking" are simply discursive habit and that the real point of practice is distinguishing different types of experience from the context (mind) within which they occur.
As one more closely observes mental activity, one finds that happiness (for example) is not exclusively a quality brought about by a change in outer circumstances, but rather that realizing happiness often starts with loosening and releasing attachment to thoughts, predispositions, and "scripts"; thereby releasing "automatic" reactions toward what seem to be pleasant and unpleasant situations or feelings. However, mindfulness does not have to be constrained to a formal meditation session. Mindfulness is an activity that can be done at any time; it does not require sitting, or focusing on the breath, but rather simply realizing what is happening in the present moment is mental content, including simply noticing the mind's usual "commentary". One can be mindful of the sensations in one's feet while walking, of the sound of the wind in the trees, or the feeling of soapy water while doing dishes. One can also be mindful of the mind's commentary: "I wish I didn't have to walk any further, I like the sound of the leaves rustling, I wish washing dishes weren't so boring and the soap weren't drying out my skin", etc. Once we identify experience as mental content, we have the freedom to cease identification with any judgments/perceptions: "washing dishes: boring" may become "The warm water is in unison with the detergent and is currently washing away the plate's grime, the sun is shining through the window and casting an ever greater shadow on the dish's white ceramics." In this example, one may see that washing does not have to be judged "boring"; washing dishes is only a process of coordinating dishes with soap and water. Any activity done mindfully is a form of meditation, and mindfulness is possible practically all the time.
[edit] Continuous mindfulness practice
In addition to various forms of meditation based around specific sessions, there are mindfulness training exercises that develop awareness throughout the day using designated environmental cues. The aim is to make mindfulness essentially continuous. Examples of such cues are the hourly chimes of clocks, red lights at traffic junctions and crossing the threshold of doors. The mindfulness itself can take the form of nothing more than taking three successive breaths while remembering they are a conscious experience of body activity within mind[14]. This approach is particularly helpful when it is difficult to establish a regular meditation practice.
Paying close attention to the present experience - the beginning of Mindfulness practice
Buddhists hold that over 2500 years ago, Buddha provided guidance on establishing mindfulness. Right mindfulness (often termed Right meditation) involves bringing one's awareness to focus on experience within the mind at the present moment (from the past, the future, or some disconnected train of thought). By paying close attention to the present experience, practitioners begin to see both inner and outer aspects of reality as aspects of the mind. Internally, one sees that the mind is continually full of chattering with commentary or judgement. By noticing that the mind is continually making commentary, one has the ability to carefully observe those thoughts, seeing them for what they are without aversion or judgment. Those practicing mindfulness realize that "thoughts are just thoughts." One is free to release a thought ("let it go") when one realizes that the thought may not be concrete reality or absolute truth. Thus, one is free to observe life without getting caught in the commentary. Many "voices" or messages may speak to one within the "vocal" (discursive) mind. It is important to be aware that the messages one hears during "thinking" are simply discursive habit and that the real point of practice is distinguishing different types of experience from the context (mind) within which they occur.
As one more closely observes mental activity, one finds that happiness (for example) is not exclusively a quality brought about by a change in outer circumstances, but rather that realizing happiness often starts with loosening and releasing attachment to thoughts, predispositions, and "scripts"; thereby releasing "automatic" reactions toward what seem to be pleasant and unpleasant situations or feelings. However, mindfulness does not have to be constrained to a formal meditation session. Mindfulness is an activity that can be done at any time; it does not require sitting, or focusing on the breath, but rather simply realizing what is happening in the present moment is mental content, including simply noticing the mind's usual "commentary". One can be mindful of the sensations in one's feet while walking, of the sound of the wind in the trees, or the feeling of soapy water while doing dishes. One can also be mindful of the mind's commentary: "I wish I didn't have to walk any further, I like the sound of the leaves rustling, I wish washing dishes weren't so boring and the soap weren't drying out my skin", etc. Once we identify experience as mental content, we have the freedom to cease identification with any judgments/perceptions: "washing dishes: boring" may become "The warm water is in unison with the detergent and is currently washing away the plate's grime, the sun is shining through the window and casting an ever greater shadow on the dish's white ceramics." In this example, one may see that washing does not have to be judged "boring"; washing dishes is only a process of coordinating dishes with soap and water. Any activity done mindfully is a form of meditation, and mindfulness is possible practically all the time.
[edit] Continuous mindfulness practice
In addition to various forms of meditation based around specific sessions, there are mindfulness training exercises that develop awareness throughout the day using designated environmental cues. The aim is to make mindfulness essentially continuous. Examples of such cues are the hourly chimes of clocks, red lights at traffic junctions and crossing the threshold of doors. The mindfulness itself can take the form of nothing more than taking three successive breaths while remembering they are a conscious experience of body activity within mind[14]. This approach is particularly helpful when it is difficult to establish a regular meditation practice.
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