Related Experiment Video
Updated: Jul 16, 2026

Experimental Paradigm for Measuring the Effect of Induced Emotion on Grammar Learning
Published on: January 29, 2020
A programmable pre-emphasis system
H M Gach1, I J Lowe, D P Madio
1Department of Physics and Astronomy, University of Pittsburgh, Pennsylvania, USA.
Abstract:
MRI systems often use magnetic field gradient and shim pulse-shaping networks (pre-emphasis) to correct for magnetic field distortions caused by eddy currents. A pre-emphasis system that uses up to 16 fixed resistor-capacitor (RC) time constants per channel with programmable amplitude coefficients is described. The magnetic fields induced by the pre-emphasis RC time constants serve as a set of basis functions for compensating eddy-current fields induced by the gradient set. The resultant time-varying magnetic field gradient accurately reflects the gradient specified by the pulse programmer. Reductions in eddy-current fields are demonstrated for actively shielded and unshielded gradient sets.
More Related Videos
10:08The Evoked Potential Operant Conditioning System (EPOCS): A Research Tool and an Emerging Therapy for Chronic Neuromuscular Disorders
Published on: August 25, 2022
05:48Memorization-Based Training and Testing Paradigm for Robust Vocal Identity Recognition in Expressive Speech Using Event-Related Potentials Analysis
Published on: August 9, 2024
Related Concept Videos
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
Design Example
Air-entraining Agents
Elaborative Rehearsals
The effectiveness of...
Information Processing Approach
Automatic Processing and Automatic Social Behavior