Frequency features of the resting-state functional magnetic resonance imaging (rs-fMRI) signal can be crucial metrics that reveal patterns of brain aging. However, how the frequency shift during brain aging is still unclear. In this study, we examined the peak frequency and standard deviation of the rs-fMRI signal in healthy aging adults, divided into (0-0.1 Hz) and (0.1-0.3 Hz) bands. We found that in older adults, rs-fMRI fluctuation amplitude is lower but fluctuation frequency is higher in older adults, and these effects depend on the fMRI frequency range.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords