Friday, November 2, 2007

Talking Brains at Society for Neuroscience

If you are in San Diego for the SFN meeting, stop by our poster on Tuesday. I'll be there...

The neural organization of linguistic short-term memory is sensory modality-dependent: Evidence from signed and spoken language
San Diego Convention Center: Halls B-H
Presentation Start/End Time:
Tuesday, Nov 06, 2007, 2:00 PM - 3:00 PM
1Univ. California-Irvine, Irvine, CA; 2The Salk Inst. for Biol. Sci., San Diego, CA
Despite decades of research, there is still disagreement regarding the nature of the information that is maintained in linguistic short-term memory (STM). Some authors argue for specifically phonological codes, whereas others argue for more general sensory traces. We test these hypotheses by investigating linguistic STM in two distinct sensory-motor modalities, signed and spoken language. Hearing bilingual participants (native in English and American Sign Language) performed equivalent STM tasks in both languages during fMRI scanning. Distinct, sensory-specific activations were seen during the maintenance phase of the task for spoken versus signed language. These regions have been shown previously to respond also to non-linguistic sensory stimulation, suggesting that linguistic STM tasks recruit sensory-specific networks. However, maintenance-phase activations common to the two languages were also observed. We conclude that linguistic STM involves both sensory-dependent and sensory-independent neural networks, and further propose that STM may be supported by multiple, parallel circuits.

1 comment:

David Poeppel said...

Talking Brains East also has some presentations at the Society for Neuroscience.

On Sunday afternoon (auditory slide session), David is giving a talk about the Luo & Poeppel (2007) Neuron paper.

On Tuesday morning, Julian Jenkins is presenting a poster showing MEG data to complex tones. The results are easy -- the interpretation more complex.

On Tuesday afternoon, Phil Monahan is presenting a poster (co-authored with Bill Idsardi) on normalization in vowel perception using F3. Again, MEG data.

Support your friendly TalkingBrains crew by looking at their posters and commenting, vigorously.