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Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
Published on: June 12, 2017
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Neural dynamics of verbal working memory in auditory description naming
Toshimune Kambara1,2,3, Erik C Brown4, Brian H Silverstein5
1Department of Pediatrics, Children's Hospital of Michigan, Wayne State University, Detroit, MI, 48201, USA.
Scientific Reports
|October 28, 2018
Summary
This study reveals that verbal working memory (WM) plays a crucial role in auditory naming tasks. Brain activity in specific frontal regions supports WM maintenance and processing during auditory comprehension and naming.
Area of Science:
- Neuroscience
- Cognitive Science
- Neurology
Background:
- Auditory naming involves speech perception, semantic/syntactic processing, and verbal working memory (WM).
- Dissecting the specific cortical activations related to verbal WM during auditory sentence processing is challenging.
Purpose of the Study:
- To differentiate cortical activations associated with verbal WM from those involved in auditory sentence comprehension and naming.
- To investigate the role of specific brain regions in verbal WM maintenance and processing during auditory tasks.
Main Methods:
- Electrocorticography (ECoG) recordings were used in 19 patients performing auditory naming and WM tasks.
- High-gamma activity was measured to assess neural engagement during different task phases.
Main Results:
- Inferior-precentral high-gamma activity increased during auditory sentence listening, correlating with WM maintenance and patient age.
- Left frontal association neocortex activity during naming task judgment was explained by WM scanning activity.
- Distinct patterns of inferior-frontal and orbitofrontal activation suggest differential roles in WM and linguistic processing.
Conclusions:
- The inferior-precentral regions may support WM maintenance during auditory sentence listening, with maturation-related strengthening.
- A dorsal-to-ventral gradient in the left frontal cortex suggests distinct roles: middle-frontal for WM scanning and orbitofrontal for linguistic processing.
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