نتایج جستجو برای: back lobe suppression

تعداد نتایج: 316925  

Journal: :Japanese Journal of Applied Physics 2023

Abstract In this study, AlGaN/GaN high-electron-mobility transistor (HEMTs) with 65- and 38-nm channel layers back-barrier were fabricated. The isolation process resulted in damage related to the thickness of layer, which deteriorated properties such as sheet resistance Rsh transconductance gm. These attributed surface oxidation AlGaN barrier, simulation results showed that dependence on trap l...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2011
Jung Eun Shin Aaron DiAntonio

Axons often form synaptic contacts with multiple targets by extending branches along different paths. PHR (Pam/Highwire/RPM-1) family ubiquitin ligases are important regulators of axon development, with roles in axon outgrowth, target selection, and synapse formation. Here we report the function of Highwire, the Drosophila member of the PHR family, in promoting the segregation of sister axons d...

2015
Richard J. Binney Matthew A. Lambon Ralph

By developing and applying a method which combines fMRI and rTMS to explore semantic cognition, we identified both intrinsic (related to automatic changes in task/stimulus-related processing) and induced (i.e., associated with the effect of TMS) activation changes in the core, functionally-coupled network elements. Low-frequency rTMS applied to the human anterior temporal lobe (ATL) induced: (a...

Journal: :Cerebral cortex 2005
P C Fletcher O Zafiris C D Frith R A E Honey P R Corlett K Zilles G R Fink

Under certain circumstances, implicit, automatic learning may be attenuated by explicit memory processes. We explored the brain basis of this phenomenon in a functional magnetic resonance imaging (fMRI) study of motor sequence learning. Using a factorial design that crossed subjective intention to learn (explicit versus implicit) with sequence difficulty (a standard versus a more complex altern...

Journal: :Developmental Cognitive Neuroscience 2017
Lauren L. Emberson Grace Cannon Holly Palmeri John E. Richards Richard N. Aslin

How does the developing brain respond to recent experience? Repetition suppression (RS) is a robust and well-characterized response of to recent experience found, predominantly, in the perceptual cortices of the adult brain. We use functional near-infrared spectroscopy (fNIRS) to investigate how perceptual (temporal and occipital) and frontal cortices in the infant brain respond to auditory and...

2002
Charan Ranganath Robert T. Knight Helen Wills

INTRODUCTION Although it has been speculated for many years that the prefrontal cortex plays a role in long-term memory for events, or episodic memory, only recently have researchers made a concerted attempt to define this role. Most theories of prefrontal function suggest that this region implements " top-down " or " executive " processes that influence a variety of domains, including memory. ...

2008
G. Króliczak T. D. McAdam D. J. Quinlan J. C. Culham

We tested whether or not the control of real actions in an ever-changing environment would show any dependence on prior actions elicited by instructional cues a few seconds before. To this end, adaptation of the functional magnetic resonance imaging signal was measured while human participants sequentially grasped three-dimensional objects in an event-related design, using grasps oriented along...

Journal: :Epilepsy & behavior : E&B 2013
Helena Gauffin Helene van Ettinger-Veenstra Anne-Marie Landtblom Daniel Ulrici Anita McAllister Thomas Karlsson Maria Engström

We aimed to study the effect of a potential default mode network (DMN) dysfunction on language performance in epilepsy. Language dysfunction in focal epilepsy has previously been connected to brain damage in language-associated cortical areas. In this work, we studied generalized epilepsy (GE) without focal brain damage to see if the language function was impaired. We used functional magnetic r...

2010
R. K. JEYACHITRA R. SUKANESH

--An analysis of the performance of a simple, incoherent spectrum sliced microwave photonic filter is presented. This filter structure is based on cascading of two incoherent fiber Fabry -Pérot filters as a slicing element of a broadband optical source. The filter performance is studied by measuring the overall Free Spectral Range, 3dB Bandwidth, Quality factor and Main Lobe to Sidelobe Suppres...

Journal: :Iet Microwaves Antennas & Propagation 2023

A compact, ultra-thin electromagnetic bandgap (EBG) backed antenna is presented for the 24 GHz ISM band WBAN applications. The proposed has Koch fractal geometry-based bow-tie slots, designed with an overall dimension of 0.91 λ 0 ${\lambda }_{\mathbf{0}}$ × 0.84 }_{0}$ 0.01 and by a 5 element thick EBG structure; it fabricated on flexible Rogers 5880 substrate (thickness = 0.127 mm dielectric c...

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