Oxygen Tension Changes Evoked in the Brain by Visual Stimulation

Localized changes in oxygen tension were recorded with platinum cathodes placed in the lateral geniculate nucleus in both anesthetized and awake cats. The amplitude of the responses increased with increasing stimulus intensity, but decreased with increasing flash rate. Both increases and decreases i...

Full description

Saved in:
Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1967-06, Vol.156 (3780), p.1392-1393
Main Authors: Gijsbers, Karel J., Melzack, Ronald
Format: Article
Language:English
Subjects:
Animals
Blood flow
Cathodes
Cats
Electric current
Electrodes
Evoked Potentials
Geniculate Bodies - metabolism
Inferior colliculus
Lateral geniculate bodies
Light
Odes
Oxygen
Oxygen - metabolism
Oxygen partial pressure
Partial Pressure
Visual Perception
Visual stimulation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Localized changes in oxygen tension were recorded with platinum cathodes placed in the lateral geniculate nucleus in both anesthetized and awake cats. The amplitude of the responses increased with increasing stimulus intensity, but decreased with increasing flash rate. Both increases and decreases in cathode current were produced by steady illumination. The characteristics of the responses suggest that the responses reflect localized variations in blood flow, produced in turn by changes evoked in the tonic neural activity of the lateral geniculate nucleus.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.156.3780.1392