scholarly journals Training on an Appetitive (Delay)-Conditioning Task Enhances Oscillatory Waves During Sleep in the Cortical and Amygdalar Network

2018 ◽  
Vol 12 ◽  
Author(s):  
Shweta Tripathi ◽  
Pankaj Taneja ◽  
Sushil K. Jha
Keyword(s):  
Delay Conditioning ◽  
Oscillatory Waves

UCR diminution in trace and delay conditioning.

1969 ◽  
Vol 79 (2, Pt.1) ◽  
pp. 246-248 ◽  
Author(s):  
William W. Grings ◽  
Anne M. Schell
Keyword(s):  
Delay Conditioning

Intertrial unconditioned stimuli preferentially interfere with delay conditioning.

2010 ◽  
Vol 36 (2) ◽  
pp. 232-242 ◽  
Author(s):  
Douglas A. Williams ◽  
Heather K. MacKenzie ◽  
Kenneth W. Johns
Keyword(s):  
Delay Conditioning

scholarly journals The Dynamics of a Forced Moored Sphere in Oscillatory Waves

1985 ◽  
Vol 51 (11) ◽  
pp. 1769-1776
Author(s):  
Satoru INOUE ◽  
Osamu SATO
Keyword(s):  
Oscillatory Waves

Closure to “Friction Factor under Oscillatory Waves”

1976 ◽  
Vol 102 (3) ◽  
pp. 349-350
Author(s):  
Robert M. Meccia ◽  
William C. Allanach ◽  
Fletcher H. Griffis
Keyword(s):  
Friction Factor ◽  
Oscillatory Waves

Discussion of “Laminar Damping of Oscillatory Waves”

1963 ◽  
Vol 89 (1) ◽  
pp. 231-239
Author(s):  
S. J. Lukasik ◽  
C. E. Grosch
Keyword(s):  
Oscillatory Waves

The locomotion, shape and pseudopodial dynamics of unstimulated Dictyostelium cells are not random

1993 ◽  
Vol 106 (4) ◽  
pp. 1005-1013 ◽  
Author(s):  
T. Killich ◽  
P.J. Plath ◽  
X. Wei ◽  
H. Bultmann ◽  
L. Rensing ◽  
...  
Keyword(s):  
Cyclic Amp ◽  
Actin Polymerization ◽  
Cell Movement ◽  
Time Lapse ◽  
Phase Resetting ◽  
Wave Interference ◽  
Self Organized ◽  
Classical Wave ◽  
Spatiotemporal Oscillations ◽  
Oscillatory Waves

The dynamic periphery of unstimulated, preaggregation, hunger-stage Dictyostelium discoideum amoebae was investigated by time-lapse videomicroscopy and digital image processing. Circular maps (i.e. of each of 360 radii around the cell transformed upon Cartesian coordinates) were constructed around the centroid of individual cell images and analysed in time series. This novel technique generated spatiotemporal structures of various degrees of order in the maps, which resemble classical wave interference patterns. The patterns thus demonstrate that cell movement is not random and that cells are intrinsically vibrating bodies, transited by self-organized, superpositioned, harmonic modes of rotating oscillatory waves (ROWS). These waves appear to depend upon spatiotemporal oscillations in the physicochemical reactions associated with actin polymerization, and they govern pseudopodial movements, cell shape and locomotion generally. ROWS in this case are unrelated to the cyclic-AMP-regulated oscillations, which characterize later, aggregative populations of Dictyostelium. However, the exposure of aggregation-stage cells to a pulse of the chemoattractant cyclic-AMP induces a characteristic sequence of changes in the global cellular concentration and spatiotemporal distribution of fibrillar (F-)actin. This reaction begins with what appears to be a phase resetting of ROWS and it may, therefore, underlie the cellular perception of and response to chemotactic signals. We also develop here an analytical mathematical description of ROWS, and use it to simulate cell movements accurately.

scholarly journals SEDIMENT THRESHOLD UNDER OSCILLATORY WAVES

1974 ◽  
Vol 1 (14) ◽  
pp. 44 ◽  
Author(s):  
Paul D. Komar ◽  
Martin C. Miller
Keyword(s):  
Wave Action ◽  
Water Motion ◽  
Sediment Threshold ◽  
Oscillatory Waves

As the velocity of the water motion near the bottom under oscillatory waves is increased, there comes a stage when the water exerts a stress on the particles sufficient to cause them to move. This study reviews data on threshold of sediment motion under wave action and compares the results with the established curves for threshold under a unidirectional current.

scholarly journals The effects of stimulus distribution form during trace conditioning

2018 ◽  
Vol 72 (2) ◽  
pp. 285-297 ◽  
Author(s):  
Charlotte Bonardi ◽  
Dómhnall J Jennings
Keyword(s):  
Associative Strength ◽  
Auditory Stimulus ◽  
Trace Conditioning ◽  
Response Rates ◽  
Second Phase ◽  
Fixed Duration ◽  
Trace Interval ◽  
Delay Conditioning ◽  
Performance Effect ◽  
Distribution Form

Three experiments examined the effect of distribution form of the trace interval on trace conditioning. In Experiments 1 and 2, two groups of rats were conditioned to a fixed-duration conditioned stimulus (CS) in a trace interval procedure; rats in Group Fix received a fixed-duration trace interval, whereas for rats in Group Var the trace interval was of variable duration. Responding during the CS was higher in Group Var than in Group Fix, whereas during the trace interval this difference in responding reversed—Group Fix showed higher response rates than Group Var. Experiment 3 examined whether the greater response rate observed during the CS in Group Var was due to a performance effect or the acquisition of greater associative strength by the CS. Following trace conditioning, the rats from Experiment 1 underwent a second phase of delay conditioning with the same CS; a 5-s auditory stimulus was presented in compound with the last 5 s of the 15-s CS, and the unconditioned stimulus (US) was delivered at the offset of the CSs. On test with the auditory stimulus alone, subjects in Group Var showed lower response rates during the auditory stimulus than subjects in Group Fix. We interpreted these findings as evidence that the superior responding in Group Var during the CS was a result of it acquiring greater associative strength than in Group Fix.

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