Picture/Object Naming
Lubdha M. Shah, MD
Key Facts
Terminology
Intended to activate speech and language cortical functions for language lateralization
Localization of inferior frontal and posterior parietal temporal speech and language areas of dominant hemisphere
Anatomy-based Imaging Issues
Activity within inferior frontal gyrus (frontal operculum)
Dorsolateral prefrontal cortex
Premotor cortex
Supplementary motor area
Ventral occipitotemporal cortex (VOTC)
Design
Block design: 4 minutes
Active task consists of presenting simple objects that subject names silently
Control task utilizes nonsense symbol for visual fixation and to minimize elementary visual cortical activation
Applications
One of the simplest tasks for subjects to perform
Complementary to other speech and language paradigms, to confirm and support identification of location of Broca area and often Wernicke area
Activation in posterior inferior temporal gyrus and in bilateral VOTC seen in response to object recognition
Also results in robust SMA activity, representing premotor speech functions, which can be useful in tumors when there are lesions in this region
Task is not as lateralizing as word-generation task and some other speech and language paradigms
 (Left) Axial MPRAGE with BOLD overlay shows activation in the left inferior frontal gyrus (IFG)
 during the picture/object naming task. A small focus of activation is also noted in the posterior temporoparietal language cortex  . This relatively simple task is useful for language lateralization. (Right) Sagittal surface rendering demonstrates activation in the left IFG  and dorsolateral prefrontal cortex  . A small area of activation is noted in the posterior temporoparietal language cortex  .Related posts: Stay updated, free articles. Join our Telegram channel
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