Sentences with phrase «oscillations during»

Nature of climatic oscillations during the Ice Age.

Oscillations during an interglacial are smaller and are cooler (Bond) events, and oscillations become larger the colder temperatures become.

The climate record obtained from two long Greenland ice cores reveals several brief climate oscillations during glacial time.

Uhlhaas and colleagues summarize decades of work to hypothesize that «in ASDs abnormal brain maturation during early prenatal and postnatal periods results in cortical circuits that are unable to support the expression of high - frequency oscillations during infancy.

One study, published in Proceedings of the National Academy of Sciences in January, hinted at such a mechanism when it linked sea ice decline to apparent changes in the Arctic Oscillation during several winters preceded by large sea ice losses.

Sea ice response to an extreme negative phase of the Arctic Oscillation during winter 2009/2010.

for article Reorganization of the North Atlantic Oscillation during early Holocene deglaciation.

Seems that the most recent warming trend that begins just past the max trough of the Atlantic Multi-decadal lines up with the warming of the Pacific Decadal Oscillation during two of the main multi-centenial warm surges, the first one from about 1910 - 1940 and the 2nd stronger one from about 1970 - 2000.

One study, published in Proceedings of the National Academy of Sciences in January, hinted at such a mechanism when it linked sea ice decline to apparent changes in the Arctic Oscillation during several winters preceded by large sea ice losses.

The period of strongly positive Arctic Oscillation during 1989 - 1995 and the loss of multi-year ice set the stage for the large decline in sea ice extent in the past decade.

Not exact matches

This trade wind strengthening, which occurs during a the negative phase of a phenomenon called the Interdecadal Pacific Oscillation (also known as the Pacific Decadal Oscillation), pushes warm water westward and and changes Pacific Ocean circulation.

More recent work has shown that patterns of oscillations can facilitate the representation of visual space during eye movements.

Using a technique called optogenetics, the researchers blocked a brain oscillation called theta waves in the hippocampus, a brain structure involved in memory, during REM sleep.

Over time this can produce vocal nodes, calluslike knobs that grow on the vocal cords and prevent them from closing completely during their oscillation.

Slow oscillations in brain activity, which occur during so - called slow - wave sleep, are critical for retaining memories.

During the other phase of the North Atlantic Oscillation, when the air pressure difference is smaller, less than average amounts of mild air flow to Europe.

«Both during encoding and retrieval of declarative memories there is an interaction between these areas mediated through gamma and theta oscillations.

«Importantly, the sound stimulation is effective only when the sounds occur in synchrony with the ongoing slow oscillation rhythm during deep sleep.

During each of the oscillation cycles a wave travels over the vocal folds from the lungs to the mouth, which keeps the oscillations going.

«But it has been demonstrated that neuronal oscillations accompany learning processes and even happen during sleep.

Their alpha oscillations were recorded before and during the task.

Those who woke during REM sleep and successfully recalled their dreams were more likely to demonstrate a pattern of EEG oscillations called theta waves in frontal and prefrontal cortex areas — the parts of the brain where our most advanced thinking occurs.

«The oscillating checkerboard pattern is a more «naturalistic» stimulus, in that its timing is similar to the very subtle neural oscillations made during normal thought processes,» explains Polimeni.

They strengthened the slow oscillations of neurons during so - called non-rapid-eye-movement rest, applying 0.517 milliampere at the 0.75 hertz frequency, which most closely mimics the brain's signal during such deep sleep.

By comparing the small oscillations in cosmic ray rate and temperature with the overall trends in both since 1955, Sloan and Wolfendale found that less than 14 percent of the global warming seen during this period could have been caused by solar activity.

«It confirms that the during the Medieval Warm Period between 1080 and 1430 the oscillation index was in an unusually prolonged positive phase, which brings increased rain to Scotland and drier conditions in the western Mediterranean,» says Baker, of the UNSW Connected Waters Initiative Research Centre.

«Often during the night a regular pattern is manifested, where a slow oscillation from the cortex is immediately followed by a thalamic spindle and while this happens, a hippocampal ripple appears in parallel.

During slow - wave sleep, groups of neurons firing at the same time generate brain waves with triple rhythms: slow oscillations, spindles, and ripples.

These findings agree well with the discovery last year by Cassini that Enceladus undergoes large back - and - forth oscillations, called libration, during its orbit.

Slow oscillations also occur during coma and general anesthesia, and are associated with decreased arousal.

In addition, the new scheme notably improves the forecasting of monsoon timing during years affected by the global weather phenomenon El Niño — Southern Oscillation (ENSO), particularly in its La Niña phase.

The slow - oscillation upstates are theorized to provide a window of opportunity for memory consolidation, and memory reactivation underlying consolidation may occur preferentially during these times.

Such oscillations occur naturally as the irregular nucleus rotates about its spin axis and reflects different amounts of sunlight during a rotation cycle.

The records document that the Laschamp Excursion was characterized locally by (1) declination changes of ± 120 °, (2) inclination changes of more than 140 °, (3) ~ 1200 - year oscillations in both inclination and declination, (4) near 90 ° out - of - phase relationships between inclinations and declinations that produced two clockwise loops in directions and virtual geomagnetic poles (VGPs) followed by a counterclockwise loop, (5) excursional VGPs during both intervals of clockwise looping, (6) magnetic field intensities less than 10 % of normal that persisted for almost 2000 years, (7) marked similarity in excursional directions over ~ 5000 km spatial scale length, and (8) secular variation rates comparable to historic field behavior but persisting in sign for hundreds of years.

High frequency oscillations in the λ 13C composition of long chain fatty acids during MIS 3 appear to coincide with Dansgaard / Oeschger variability in high latitude ice cores, with positive (negative) excursions occurring during stadial (interstadial) periods.

Vaishnavi Ananthanarayanan (Tolić - Nørrelykke, MPG)-- «Dynein dynamics during meiotic nuclear oscillations of fission yeast» (2014)

Similar fluctuations in OMZ intensity have occurred during the Dansgaard - Oeschger (D - O) events (millennial - scale abrupt climate oscillations) during the last glacial period (Cannariato and Kennett, 1999; Schmittner et al., 2007).

Nieves said an example is the U.S. West Coast, where the phase of a multi-decadal ocean climate pattern called the Pacific Decadal Oscillation has helped keep sea level rise lower during the past two decades.

Davide Accardi (Tolić - Nørrelykke, MPG)-- «Dynein redistribution during nuclear oscillations in Schizosaccharomyces pombe» (2012)

Large interannual variability in snowpack can be nested within Pacific Decadal Oscillation (and Pacific North American) driven patterns (e.g., see the high snow years of 1996 and 1997 that occurred during a 25 - year period of below average snowpack).

In order to see if oscillation has occurred during the neutrinos» 500 - mile journey, the detector at Minnesota measures the relative fraction of mu and electron neutrinos.

Cortical theta oscillations were observed during the transition from sleep and during quiet wakefulness; however, the authors were unable to find any correlation between hippocampal and cortical theta waves, and concluded that the two processes are probably controlled by independent mechanisms.

We interpret these findings as directional oscillation - based connectivity, under the hypothesis that EEG - BOLD coupling at rest predicts EEG - BOLD coupling during movie viewing (see Materials and Methods and Morillon et al., 2010).

They found that similar abnormalities emerged during periods of reduced gamma - wave oscillations — a type of brain wave that is crucial to regulating learning and memory.

Plant drought - tolerant species in years with strong El Niño forecasts, particularly during Pacific Decadal Oscillation warm phase; plant trees that require sufficient water during establishment in La Niña years and during Pacific Decadal Oscillation cool phases Focus planting more in spring as fall planting becomes more difficult with reduced soil moisture and test different planting timings as springs shift earlier

In rats, the slowest movements give rise to frequencies around 6.5 Hz, the fastest to frequencies around 9 Hz, although faster oscillations can be observed briefly during very vigorous movements such as large jumps.

As both the theta - and gamma - informed MRI models showed significant effects in left auditory cortex during movie viewing, we assessed gamma and theta oscillations engagement during movie viewing (rest vs. movie) in each group in this region.

In particular, during the last 800,000 years, the dominant period of glacial — interglacial oscillation has been 100,000 years, which corresponds to changes in Earth's eccentricity and orbital inclination.

Sub-second oscillations of inositol 1,4,5 - trisphosphate and inositol 1,3,4,5 - tetrakisphosphate during platelet activation by ADP and thrombin: lack of correlation with calcium kinetics

«Optogenetics is very precise and therefore a good way to study how cell types and oscillations can be used in potential therapeutic prototyping,» Boyden said during a press briefing this week (December 6).