Preparing your results

Our searching services are busy right now. Your search will reload in five seconds.

X
Forgot Password

If you have forgotten your password you can enter your email here and get a temporary password sent to your email.

Neural correlates of sensory and decision processes in auditory object identification.

Nature neuroscience | Mar 25, 2004

http://www.ncbi.nlm.nih.gov/pubmed/14966525

Physiological studies of auditory perception have not yet clearly distinguished sensory from decision processes. In this experiment, human participants identified speech sounds masked by varying levels of noise while blood oxygenation signals in the brain were recorded with functional magnetic resonance imaging (fMRI). Accuracy and response time were used to characterize the behavior of sensory and decision components of this perceptual system. Oxygenation signals in a cortical subregion just anterior and lateral to primary auditory cortex predicted accuracy of sound identification, whereas signals in an inferior frontal region predicted response time. Our findings provide neurophysiological evidence for a functional distinction between sensory and decision mechanisms underlying auditory object identification. The present results also indicate a link between inferior frontal lobe activation and response-selection processes during auditory perception tasks.

Pubmed ID: 14966525 RIS Download

Mesh terms: Acoustic Stimulation | Adult | Auditory Pathways | Auditory Perception | Brain Mapping | Cerebrovascular Circulation | Cognition | Decision Making | Female | Frontal Lobe | Functional Laterality | Humans | Magnetic Resonance Imaging | Male | Middle Aged | Neuropsychological Tests | Pattern Recognition, Visual | Photic Stimulation | Reaction Time | Speech Perception | Temporal Lobe

Research resources used in this publication

None found

Research tools detected in this publication

None found

Data used in this publication

None found

Associated grants

  • Agency: NCRR NIH HHS, Id: M01 RR00058
  • Agency: NIMH NIH HHS, Id: P01 MH51358
  • Agency: NIDCD NIH HHS, Id: R01 DC006287
  • Agency: NINDS NIH HHS, Id: R01 NS33576

SumsDB (Data, Activation Foci)

Publication data is provided by the National Library of Medicine ® and PubMed ®. Data is retrieved from PubMed ® on a weekly schedule. For terms and conditions see the National Library of Medicine Terms and Conditions.