Abstract The concept of hierarchical processing—that the sensory world is broken down into basic features later integrated more complex stimulus preferences—originated from investigations visual cortex. Recent studies auditory cortex in nonhuman primates revealed a comparable architecture, which core areas, receiving direct input thalamus, turn, provide to surrounding belt. Here functional magnetic resonance imaging (fMRI) shows that human displays similar organization: pure tones (PTs)...

Cats deprived of vision from birth adapt remarkably well to their situation and show little behavioral impairment. They seem compensate for lack by relying more on auditory tactile senses. We report here that the facial vibrissae, which are most important orientation in many animals, supernormal growth both cats mice have been birth. Furthermore, whisker representation somatosensory cortical barrel field shows a concomitant enlargement binocularly enucleated mice: individual barrels expanded...

Abstract The Anninghe fault forms the eastern boundary of Sichuan‐Yunnan block in Southwest China and has been identified as an earthquake gap zone. This study intends to construct upper crustal shear wave velocity ( Vs ) structure beneath understand its seismotectonics potential large hazards. We deployed a dense seismic array along southern central valley. From 3‐month continuous records, we calculated vertical‐component cross‐correlation functions (CCFs). However, surface signals CCFs are...

Blind image quality assessment refers to the problem of evaluating visual an without any reference. In this paper, we present a no-reference blur metric for images and video using information contained in itself. We look at sharpness sharpest edges blurred image, which contains about blurring, is not on contents. The experimental results are used justify validity our approach.

ABSTRACT Traditionally, one of the major limitations for magnetic resonance sounding (MRS) measurement is that weak signal generated by subsurface water molecules prone to be disturbed high‐level electromagnetic noise. In China, power grid coverage 94.6% and spiky noise powerline harmonic are always present when utilizing MRS in suburban areas or towns. order improve performance method, two new techniques, statistical stacking adaptive notch filter, introduced remove power‐line Firstly, four...

The Mw 6.6 Lushan earthquake occurred on 2013 April 20 in the eastern margin of Tibetan Plateau, and was about 50 km away from 2008 7.9 Wenchuan rupture zone. By using arrival times portable permanent seismic stations, local tomography aftershock relocation were conducted by 41 955 first P 42 687 S arrivals. Low-Vp/Vs, high-Vp Vs anomaly are found source region, which is well consistent with distributions. ruptured fault plane might be a blind thrust defined Vp/Vs structure seismicity....

1. Single-neuron activity was recorded from the anterior auditory field (AAF) in cortex of gas-anesthetized cats. 2. Tone bursts and broad-band complex sounds were used for stimulation. Responses to frequency-modulated (FM) sounds, particular, studied systematically. 3. Linear FM sweeps centered around best frequency (BF) a neuron had an excursion large enough cover its whole tuning range. Rate direction change varied. 4. In 69% responses, peak found at instantaneous that corresponded BF...

Abstract We investigate the geometric spreading and attenuation of seismic Pn waves in Northeast China Korean Peninsula. A high‐quality broadband wave data set generated by North nuclear tests is used to constrain parameters a frequency‐dependent log‐quadratic function power law Q model. The apparent are obtained for Peninsula between 2.0 10.0 Hz. Using two‐station amplitude ratios spectra correcting them with known function, we remove contributions source crust from retrieve P information...

Magnetic resonance sounding (MRS) is a novel geophysical method to detect groundwater directly. By applying this underground projects in mines and tunnels, warning information can be provided on water bodies that are hidden front prior excavation thus reduce the risk of casualties accidents. However, unlike its application ground surfaces, MRS environments constrained by narrow space, quite weak signal, complex electromagnetic interferences with high intensities mines. Focusing special...

Magnetic-resonance sounding (MRS) is a direct, quantitative, accurate, and efficient technology that has been applied in the fields of groundwater detection, regional water-resource investigation, geological-disaster-risk early warning. However, owing to strong environmental noise, signal-to-noise ratio (SNR) data collected by MRS instruments low; thus, providing reliable results for subsequent hydrological interpretation difficult. To solve this issue, we propose method based on...

The magnetic resonance sounding (MRS) method can noninvasively, directly, and quantitatively detect groundwater forecast the potential for a water-induced disaster during tunnel construction. However, due to spatial limitations of underground engineering, signal-to-noise ratio (SNR) receiving signal is low (<; 1), which severely limits reliability warning. Thus, question how design meter-scale antenna improve SNR has become bottleneck that restricts successful application MRS method. To...

Abstract The Anninghe fault (ANHF), located in southwest China, was a major block boundary that hosted M 7.5 earthquakes historically. For seismic hazard assessment, it is critical to investigate properties before future earthquakes. To the structure, we deployed three linear dense arrays with an aperture of ∼8–9 km across different segments ANHF from October 2019 March 2020. More importantly, detonated new methane source generate waves, which environmentally friendly and can be used regions...

The widely distributed Cenozoic sediments in the Bohai Bay Basin give rise to noticeable modification of broadband teleseismic P waveforms. At one station west Basin, observed amplitude tangential P-receiver func- tions is significantly above noise level, and sedimentary reverberations (e.g., P-type wave PpPp) remain most prominent features both radial components. To investigate lateral heterogeneity structure under this site, a 3D raytracing technique used compute P-wave response, fast...

The Anninghe fault is a large left-lateral strike-slip in southwestern China. It has controlled deposition and magmatic activities since the Proterozoic, seismic activity occurs frequently. Mianning−Xichang segment of gap that been locked by high stress. Many studies suggest this great potential for earthquakes (magnitude &gt;7). We obtained three vertical velocity profiles (between Mianning Xichang) based on inversion P-wave first arrival times. travel time data were picked from seismograms...