L. Greischar

Publications54
h-index32
Citations6,641
Highly Influential Citations424
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Amygdala and Ventromedial Prefrontal Cortex Are Inversely Coupled during Regulation of Negative Affect and Predict the Diurnal Pattern of Cortisol Secretion among Older Adults
TLDR
Individual differences yielded the predicted link between brain function while reducing negative affect in the laboratory and diurnal regulation of endocrine activity in the home environment.
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Mental Training Affects Distribution of Limited Brain Resources
TLDR
This study shows that meditation, or mental training, affects the distribution of limited brain resources, and supports the idea that plasticity in brain and mental function exists throughout life and illustrates the usefulness of systematic mental training in the study of the human mind.
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Long-term meditators self-induce high-amplitude gamma synchrony during mental practice.
TLDR
It is found that long-term Buddhist practitioners self-induce sustained electroencephalographic high-amplitude gamma-band oscillations and phase-synchrony during meditation, suggesting that mental training involves temporal integrative mechanisms and may induce short-term and long- term neural changes.
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Motion correction and the use of motion covariates in multiple‐subject fMRI analysis
TLDR
A general strategy for block designs, event‐related designs, and hybrid designs to identify and eliminate probable motion artifacts while maximizing sensitivity to true activations is presented.
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Atmospheric-hydrospheric mechanisms of climate anomalies in the western equatorial Indian Ocean
Atmosphere-ocean mechanisms of rainfall anomalies at the coast of eastern Africa are studied using long-term ship observations in the Indian Ocean, surface current measurements, subsurface casts,…
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Circulation mechanisms related to northeast Brazil rainfall anomalies
This study explores the role of the upper ocean for circulation anomalies in the overlying atmosphere, with focus on the late boreal winter and extreme climatic events in northeast Brazil. Data…
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Mental Training Enhances Attentional Stability: Neural and Behavioral Evidence
TLDR
It is shown, with dichotic listening task performance and electroencephalography, that training attention, as cultivated by meditation, can improve the ability to sustain attention and support the notion that mental training can significantly affect attention and brain function.
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The monsoonal heat budget of the hydrosphere-atmosphere system in the Indian Ocean sector
The heat budget of the combined hydrosphere-atmosphere system in the Indian Ocean sector (30°N to 30°S, 30°–120°E) is studied on the basis of surface ship observations and subsurface temperature…
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Stress Potentiates Early and Attenuates Late Stages of Visual Processing
TLDR
Results indicated that threat of shock amplified stress, measured using retrospective ratings and concurrent facial electromyography, and double-dissociated early sensory-specific processing from later task-directed processing of emotionally neutral stimuli, demonstrating that stress can have strikingly different consequences at different processing stages.
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Comparison of fMRI motion correction software tools
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