enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Oxygen–hemoglobin dissociation curve - Wikipedia

    en.wikipedia.org/wiki/Oxygen–hemoglobin...

    Specifically, the oxyhemoglobin dissociation curve relates oxygen saturation (SO 2) and partial pressure of oxygen in the blood (PO 2), and is determined by what is called "hemoglobin affinity for oxygen"; that is, how readily hemoglobin acquires and releases oxygen molecules into the fluid that surrounds it. Structure of oxyhemoglobin

  3. Blood-oxygen-level-dependent imaging - Wikipedia

    en.wikipedia.org/wiki/Blood-oxygen-level...

    Other methods which propose to measure neural activity directly have been attempted (for example, measurement of the Oxygen Extraction Fraction, or OEF, in regions of the brain, which measures how much of the oxyhemoglobin in the blood has been converted to deoxyhemoglobin [3]), but because the electromagnetic fields created by an active or ...

  4. Photoacoustic microscopy - Wikipedia

    en.wikipedia.org/wiki/Photoacoustic_microscopy

    Visible light absorbers (λ = 400 to 700 nm) include oxyhemoglobin, deoxyhemoglobin, melanin, and cytochrome c. Visible light photoacoustic microscopy is particularly useful in determining hemoglobin concentration and oxygen saturation due to the difference in absorption profiles of oxyhemoglobin and deoxyhemoglobin.

  5. Haldane effect - Wikipedia

    en.wikipedia.org/wiki/Haldane_effect

    Histidine residues in hemoglobin can accept protons and act as buffers.Deoxygenated hemoglobin is a better proton acceptor than the oxygenated form. [1]In red blood cells, the enzyme carbonic anhydrase catalyzes the conversion of dissolved carbon dioxide to carbonic acid, which rapidly dissociates to bicarbonate and a free proton:

  6. Hemichrome - Wikipedia

    en.wikipedia.org/wiki/Hemichrome

    Some hemichromes can be reduced to the high-spin state of deoxyhemoglobin, while others are first being reduced to hemochromes (FeII) and then to deoxyhemoglobin through anaerobic dialysis. Photolysis, in the presence of oxygen from CO and its reaction with the hemochrome, can quickly convert a hemichrome to oxyhemoglobin (HbO2). [2]

  7. Functional near-infrared spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Functional_near-infrared...

    The signal is often compared with the BOLD signal measured by fMRI and is capable of measuring changes both in oxy- and deoxyhemoglobin concentration, [2] but can only measure from regions near the cortical surface. fNIRS may also be referred to as Optical Topography (OT) and is sometimes referred to simply as NIRS.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Haemodynamic response - Wikipedia

    en.wikipedia.org/wiki/Haemodynamic_response

    The onset of neural activity leads to a systematic series of physiological changes in the local network of blood vessels that include changes in the cerebral blood volume per unit of brain tissue (CBV), changes in the rate of cerebral blood flow, and changes in the concentration of oxyhemoglobin and deoxyhemoglobin.