IMT Institutional Repository: No conditions. Results ordered -Date Deposited. 2024-03-29T09:38:04ZEPrintshttp://eprints.imtlucca.it/images/logowhite.pnghttp://eprints.imtlucca.it/2016-04-12T09:35:03Z2016-04-12T09:35:03Zhttp://eprints.imtlucca.it/id/eprint/3424This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/34242016-04-12T09:35:03ZEffect of dementia severity on the functional response to parametric visual stimulation during PET in Alzheimer diseaseMarc J. MentisGene E. AlexanderMaura L. FureyB. LevineK. PrasadJack KrasukiPietro Pietrinipietro.pietrini@imtlucca.itMark B. SchapiroStanley I. Rapoport2016-04-12T09:19:23Z2016-04-12T09:19:23Zhttp://eprints.imtlucca.it/id/eprint/3420This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/34202016-04-12T09:19:23ZAttentionārelated modulation of activity in primary and secondary auditory cortexWE investigated the effects of auditory attention on brain activity using functional magnetic resonance imaging. Subjects listened to three word lists, three times each, and were instructed to count the number of times they heard a target word during two of these presentations. For the third, they listened to the words without counting. All subjects showed significant areas of activation in auditory cortex during the listening conditions compared to rest. There was significantly more activation and a larger area of activation, particularly in association cortex, in the left temporal lobe during counting of targets compared to the no-target conditions, with a similar trend in the right hemisphere. These results provide evidence of an attention-related enhancement of both activation magnitude and extent in auditory cortex.Cheryl L. GradyJohn W. Van MeterJose Ma MaisogPietro Pietrinipietro.pietrini@imtlucca.itJack KrasukiJosef P. Rauschecker