Shopping cart ITEMS
 modern scholarly publishers in the finest tradition
Login Register
Home
Books
Journals
References
A-Z Index
Author Index
For Our Authors
User Area
Shopping Cart
Contact
Electronic Data Center

Critical Reviews™ in Biomedical Engineering

 

ISSN for PRINT: 0278-940X

Institutional price:

$1677.00

Issues per year:

6

For Online Access

Best Paper Award Selection - Editorial Board Site

Add subscription to shopping cart

2000, Volume28

Issue 1&2

  356 pages  

   

click 'Save as...' here to save XML metadata

Issue price - $532.00  

Add to shopping cart

  • Effects of Esophageal Stimulation in Healthy Subjects
  • Markad V. Kamath
    McMaster University

    Andrew May
    Departments of Medicine and Electrical and Computer Engineering, HSC 3E 25, McMaster University, 1200 Main Street West, Hamilton, Ontario, L8N 3Z5, Canada

    Stephan Hollerbach
    Ruhr-Universitaet of Bochum, Bochum, Germany

    Debbie Fitzpatrick
    Departments of Medicine and Electrical and Computer Engineering, HSC 3E 25, McMaster University, 1200 Main Street West, Hamilton, Ontario, L8N 3Z5, Canada

    Absar Bajwa
    Departments of Medicine and Electrical and Computer Engineering, HSC 3E 25, McMaster University, 1200 Main Street West, Hamilton, Ontario, L8N 3Z5, Canada

    Gervais Tougas
    Departments of Medicine and Electrical and Computer Engineering, HSC 3E 25, McMaster University, 1200 Main Street West, Hamilton, Ontario, L8N 3Z5, Canada

    Ernest L. Fallen
    Departments of Medicine and Electrical and Computer Engineering, HSC 3E 25, McMaster University, 1200 Main Street West, Hamilton, Ontario, L8N 3Z5, Canada

    Glen Shine
    Departments of Medicine and Electrical and Computer Engineering, HSC 3E 25, McMaster University, 1200 Main Street West, Hamilton, Ontario, L8N 3Z5, Canada

    Adrian R. Upton
    Departments of Medicine and Electrical and Computer Engineering, HSC 3E 25, McMaster University, 1200 Main Street West, Hamilton, Ontario, L8N 3Z5, Canada


    ABSTRACT

    We studied the effects of esophageal electrical stimulation on heart rate variability power spectra (PS/HRV) and cortical evoked potentials (EPs) in healthy subjects. The intensity of stimulation was varied from 2.7 to 20 mA. We found that the amplitude of the cortical evoked potentials (amplitude of the N2/P2 peak) increased from 5.1 ± 0.7 mV at 5 mA to 16.3 ± 1.1 mV at 20 mA. The PS/HRV showed an increase in the vagal modulation of the sinus node. When the stimulation frequency was varied from 0.1 to 1 Hz at a constant intensity of 15 mA, the amplitude of cortical EPs (N2/P2 peak) decreased with increase in the frequency of stimulation (p < 0.05). The LF:HF ratio decreased significantly for all frequencies of stimulation (p < 0.005). An experimental paradigm to evoke the cognitive component in the cortical EPs yielded a peak around 354 ms following the stimulus.

    Download article, 6 pages

    Article price - $35.00  

    Add to shopping cart

    << Previous article   Next article >>

    Designed by offsiteteam Designed by offsiteteam Designed by offsiteteam
    Begell House Inc.
    50 Cross Highway,
    Redding, CT 06896
    TEL (203) 938 1300
    FAX (203) 938 1304
    orders@begellhouse.com