Memory's echo: vivid remembering reactivates sensory-specific cortex. Wheeler, M. E., Petersen, S. E., & Buckner, R. L. Proc Natl Acad Sci U S A, 97(20):11125–11129, 2000. abstract bibtex A fundamental question in human memory is how the brain represents sensory-specific information during the process of retrieval. One hypothesis is that regions of sensory cortex are reactivated during retrieval of sensory-specific information (1). Here we report findings from a study in which subjects learned a set of picture and sound items and were then given a recall test during which they vividly remembered the items while imaged by using event-related functional MRI. Regions of visual and auditory cortex were activated differentially during retrieval of pictures and sounds, respectively. Furthermore, the regions activated during the recall test comprised a subset of those activated during a separate perception task in which subjects actually viewed pictures and heard sounds. Regions activated during the recall test were found to be represented more in late than in early visual and auditory cortex. Therefore, results indicate that retrieval of vivid visual and auditory information can be associated with a reactivation of some of the same sensory regions that were activated during perception of those items.
@Article{Wheeler2000,
author = {Wheeler, M. E. and Petersen, S. E. and Buckner, R. L.},
journal = {Proc Natl Acad Sci U S A},
title = {Memory's echo: vivid remembering reactivates sensory-specific cortex.},
year = {2000},
number = {20},
pages = {11125--11129},
volume = {97},
abstract = {A fundamental question in human memory is how the brain represents
sensory-specific information during the process of retrieval. One
hypothesis is that regions of sensory cortex are reactivated during
retrieval of sensory-specific information (1). Here we report findings
from a study in which subjects learned a set of picture and sound
items and were then given a recall test during which they vividly
remembered the items while imaged by using event-related functional
MRI. Regions of visual and auditory cortex were activated differentially
during retrieval of pictures and sounds, respectively. Furthermore,
the regions activated during the recall test comprised a subset of
those activated during a separate perception task in which subjects
actually viewed pictures and heard sounds. Regions activated during
the recall test were found to be represented more in late than in
early visual and auditory cortex. Therefore, results indicate that
retrieval of vivid visual and auditory information can be associated
with a reactivation of some of the same sensory regions that were
activated during perception of those items.},
institution = {Department of Psychology, Howard Hughes Medical Institute, Washington University School of Medicine, St. Louis, MO 63110, USA.},
keywords = {Adult; Cerebral Cortex, physiology; Female; Humans; Magnetic Resonance Imaging; Male; Memory, physiology; Sensory Receptor Cells, physiology},
language = {eng},
medline-pst = {ppublish},
pmid = {11005879},
timestamp = {2014.10.22},
}
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