Program#/Poster#: | 738.10/XX3 |
Title: | The neural organization of linguistic short-term memory is sensory modality-dependent: Evidence from signed and spoken language |
Location: | San Diego Convention Center: Halls B-H |
Presentation Start/End Time: | Tuesday, Nov 06, 2007, 2:00 PM - 3:00 PM |
Authors: | *J. PA1, S. M. WILSON1, H. PICKELL2, U. BELLUGI2, G. HICKOK1; 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. | |
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...
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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.
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