10.21977/WAXN-Z997
Meng, Jhao-An
Saberi, Kourosh
DATA set for PLOS One Hsieh et al. 2016
UC Irvine
2016
fMRI
auditory motion
sensorimotor
Saberi;Saberi, Kourosh
2016-05-26T13:26:05+00:00
Dataset
150320964
Creative Commons Attribution 4.0 International (CC BY 4.0)
The auditory system encounters motion cues through an acoustic object’s
movement or rotation of the listener’s head in a stationary sound field,
generating a wide range of naturally occurring velocities from a few to
several hundred degrees per second. The angular velocity of moving
acoustic objects relative to a listener is typically slow and does not
exceed tens of degrees per second, whereas head rotations in a stationary
acoustic field may generate fast-changing spatial cues in the order of
several hundred degrees per second. We hypothesized that these two types
of systems (i.e., encoding slow movements of an object or fast head
rotations) may engage functionally distinct substrates in processing
spatially dynamic auditory cues, with the latter potentially involved in
maintaining perceptual constancy in a stationary field during head
rotations and therefore possibly involving corollary-discharge mechanisms
in premotor cortex. Using fMRI, we examined cortical response patterns to
sound sources moving at a wide range of velocities in 3D virtual auditory
space. We found a significant categorical difference between fast and slow
moving sounds, with stronger activations in response to higher velocities
in the posterior superior temporal regions, the planum temporale, and
notably the premotor ventral-rostral (PMVr) area implicated in planning
neck and head motor functions
fMRI scanning of human cortex while listening to motion of an auditory
source in 3D virtual space.
Data were created with funding from the National Institutes of Health,
National Institute on Deafness and Other Communication Disorders under
grant R01DC009659.