Alex Huth, UC Berkeley

Using stories to understand how the brain represents words

Saturday October 15 11:00 - 12:30PM

Add To Calendar

Bostock Library, 411 Chapel Drive, The Edge Workshop Room

About This Event:

Human beings have the unique ability to extract the meaning, or semantic content, from spoken language. Yet little is known about how the semantic content of everyday narrative speech is represented in brain. I used a new fMRI-based approach to show that semantic information is represented in complex cortical maps that are highly consistent across subjects. Using BOLD data collected while subjects listened to several hours of natural narrative stories, I constructed voxel-wise semantic regression models that accurately predict BOLD responses based on semantic features extracted from the stories. These semantic features were defined using a statistical word co-occurrence model. I then used a novel Bayesian generative model of cortical maps to discover how the representations revealed by voxel-wise modeling are organized across the cortical sheet. The results of these analyses show that the semantic content of narrative speech is represented across parietal cortex, prefrontal cortex, and temporal cortex in complex maps comprising dozens of semantically selective brain areas.Alex Huth is currently a neuroscience postdoc in Dr. Jack Gallant's laboratory at UC Berkeley, where he does work in computational and experimental neuroscience using fMRI.

Workshop:  10:00am to 1:00 pm

Alex Huth talk: 11:00am to 12:30 pm

Sponsors:

  • Franklin Humanities Institute
  • Neurohumanities Research Group

Learn more about DIBS

The Duke Institute for Brain Sciences is a scientific institute with a collaborative spirit and a commitment to education, service and knowledge across disciplines. We encourage creativity, taking risks, sharing ideas and working together.

eNewsletter

Sign up to receive email updates about DIBS news, events and more.