In vivo and noninvasive measurement of a songbird head's optical properties.
By assessing the cerebral blood volume and the hemoglobin oxygen saturation level, near-infrared spectroscopy (NIRS) probes brain oxygenation, which reflects cerebral activity. To develop a noninvasive method monitoring the brain of a songbird, we use an original NIRS device, i.e., a white laser coupled with an ultrafast spectrotemporal detector of optical signals without wavelength scanning. We perform in vivo measurements of the absorption coefficient and the reduced scattering coefficient of the caudal nidopallium area of the head of a songbird (the zebra finch).
Ramstein
Stéphane
S
Laboratoire Traitement du Signal et Instrumentation, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5516, Université Jean Monnet, Saint-Etienne, France.
Vignal
Clémentine
C
Mathevon
Nicolas
N
Mottin
Stéphane
S
D000818:Animals; D001921:Brain / Q000098:blood supply* / Q000502:physiology*; D001931:Brain Mapping / Q000379:methods*; D002560:Cerebrovascular Circulation / Q000502:physiology; D046369:Finches / Q000502:physiology*; D006257:Head / Q000502:physiology; D006454:Hemoglobins / Q000378:metabolism*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007834:Lasers; D013055:Spectrophotometry, Infrared / Q000379:methods*
D006454:Hemoglobins