Chronic stimulation of a mystacial whisker follicle for 24h induces structural and functional changes in layer IV of the corresponding barrel, with an insertion of new inhibitory synapses on spines and a depression of neuronal responses to the stimulated whisker (Knott et al. 2002). Under urethane anaesthesia, we analyzed how sensory responses of single units are affected in layer IV and layers...

introduction: it is believed that locus coeruleus (lc) influences the sensory information processing. however, its role in cortical surround inhibitory mechanism is not understood. in this experiment, using controlled mechanical displacement of whiskers we investigated the effect of phasic electrical stimulation of lc on response of layer v barrel cortical neurons in anesthetized rat. methods: ...

This paper presents the results of a recent field test carried out before opening phases Szapáry motorway bridge across Tisza River in central Hungary. The evaluation was based on static and dynamic load tests that provided information deflection, stresses, mode shapes along bridge. structure has two large continuous independent steel box girders cover spans floodplain river. Various configurat...

introduction: systemic application of capsaicin to neonatel rodents depletes their primary afferent c-fibers and also results in a wide variety of changes observable in adulthood. the manual methods used for stimulation of vibrissa provide limited information on response properties of barrel cortical neurons. in this study the effect of c-fiber depletion induced by neonatal capsaicin (cap) trea...

We examined the effects of varying vibrissa stimulation frequency on intrinsic signal and neuronal responses in rat barrel cortex. Optical imaging of intrinsic signals demonstrated that the region of cortex activated by deflection of a single vibrissa at 1 Hz is more diffuse and more widespread than the territory activated at 5 or 10 Hz. With the use of two different paradigms, constant time of...

Whole-cell voltage recordings were made in vivo from excitatory neurons (n = 23) in layer 4 of the barrel cortex in urethane-anaesthetised rats. Their receptive fields (RFs) for a brief whisker deflection were mapped, the position of the cell soma relative to barrel borders was determined for 15 cells and dendritic and axonal arbors were reconstructed for all cells. Three classes of neurons wer...

Ground-based synthetic aperture radar (GB-SAR), as a new non-contact measurement technique, has been widely applied to obtain the dynamic deflection of various bridges without corner reflectors. However, it will cause some high-frequency noise in obtained with low signal-to-noise ratio. To solve this problem, paper proposes an innovative de-noising method combining wavelet synchro-squeezing tra...

evaluating existing flexible pavement condition is a pre-requisite to choose improvement technique that has to be adopted to enhance its quality. to evaluate existing pavements, non-destructive testing methods are desirable. benkelman beam and 5th wheel bump integrator are used to conduct non-destructive tests like deflection and roughness surveys on the existing pavement of 4 lane divided carr...