<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Anderson, Karen E</style></author><author><style face="normal" font="default" size="100%">Lynch, Katherine</style></author><author><style face="normal" font="default" size="100%">Zarahn, Eric</style></author><author><style face="normal" font="default" size="100%">Scarmeas, Nick</style></author><author><style face="normal" font="default" size="100%">Van Heertum, Ronald</style></author><author><style face="normal" font="default" size="100%">Sackeim, Harold</style></author><author><style face="normal" font="default" size="100%">Moeller, James R</style></author><author><style face="normal" font="default" size="100%">Stern, Yaakov</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">H215O PET study of impairment of nonverbal recognition with normal aging.</style></title><secondary-title><style face="normal" font="default" size="100%">J Neuropsychiatry Clin Neurosci</style></secondary-title><alt-title><style face="normal" font="default" size="100%">J Neuropsychiatry Clin Neurosci</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Adult</style></keyword><keyword><style  face="normal" font="default" size="100%">Aged</style></keyword><keyword><style  face="normal" font="default" size="100%">Aging</style></keyword><keyword><style  face="normal" font="default" size="100%">Brain</style></keyword><keyword><style  face="normal" font="default" size="100%">Cerebrovascular Circulation</style></keyword><keyword><style  face="normal" font="default" size="100%">Cognition Disorders</style></keyword><keyword><style  face="normal" font="default" size="100%">Female</style></keyword><keyword><style  face="normal" font="default" size="100%">Hippocampus</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Image Processing, Computer-Assisted</style></keyword><keyword><style  face="normal" font="default" size="100%">Intelligence</style></keyword><keyword><style  face="normal" font="default" size="100%">Male</style></keyword><keyword><style  face="normal" font="default" size="100%">Memory</style></keyword><keyword><style  face="normal" font="default" size="100%">Neuropsychological Tests</style></keyword><keyword><style  face="normal" font="default" size="100%">Positron-Emission Tomography</style></keyword><keyword><style  face="normal" font="default" size="100%">Radiopharmaceuticals</style></keyword><keyword><style  face="normal" font="default" size="100%">Visual Perception</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2005 Spring</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">17</style></volume><pages><style face="normal" font="default" size="100%">192-200</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Little research has been conducted regarding age-related changes in nonverbal memory. Using positron emission tomography (PET), the authors studied 17 elderly volunteers and 20 young volunteers, during nonverbal recognition task performance, to examine differences in brain blood flow. The subjects were asked to recognize a study list size (SLS) of shapes that was adjusted so that each subject performed at approximately 75% accuracy. Positron emission tomography results showed that, relative to younger individuals, elderly subjects engaged different regions, including the insula, during recognition. Elderly subjects did not show the relationship between parahippocampal flow and SLS, which was observed in younger subjects. These differences suggest that age-related functional brain changes partly explain performance deficits.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/15939973?dopt=Abstract</style></custom1></record></records></xml>