Effect of stimulus intensity on visually-evoked electrical brain activity maps in rabbit.
Stimulation by means of flashes is a commonly-used method in basic research into evoked potentials. Nevertheless, the different responses obtained at different luminous intensities, to which the inter-individual and intra-individual differences are added, determine the need to control this stimulus parameter for each experimental model. Maps of visually-evoked activity in the rabbit brain, obtained after monocular stimulation with flashes at different intensities of luminosity, are presented. Variation in the intensity of the luminous stimulus does not substantially affect the distribution of the electrical potential on the surface of rabbit brain described in previous articles.
Pérez-Cobo
J C
JC
Departamento de Fisiología, Facultad de Farmacia, Universidad del País Vasco, Vitoria, Spain.
Sánchez-Suero
S
S
López de Armentia
M
M
Pérez-Arroyo
M
M
D000818:Animals; D001931:Brain Mapping / Q000379:methods*; D004307:Dose-Response Relationship, Radiation; D005074:Evoked Potentials, Visual; D010775:Photic Stimulation; D011817:Rabbits; D015349:Vision, Monocular / Q000502:physiology