scholarly journals Dissociation of action and object naming: Evidence from cortical stimulation mapping

2004 ◽  
Vol 24 (1) ◽  
pp. 1-10 ◽  
Author(s):  
David P. Corina ◽  
Erin K. Gibson ◽  
Richard Martin ◽  
Andrew Poliakov ◽  
James Brinkley ◽  
...  
Keyword(s):  
Cortical Stimulation ◽  
Object Naming ◽  
Cortical Stimulation Mapping

Cortical stimulation mapping of language cortex by using a verb generation task: effects of learning and comparison to mapping based on object naming

2002 ◽  
Vol 97 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Jeffrey G. Ojemann ◽  
George A. Ojemann ◽  
Ettore Lettich
Keyword(s):  
Functional Neuroimaging ◽  
Cortical Stimulation ◽  
Object Naming ◽  
Generation Task ◽  
Content Type ◽  
Cortical Stimulation Mapping ◽  
Verb Generation ◽  
Language Areas ◽  
Language Cortex ◽  
Fine Print

Object. Cortical stimulation mapping has traditionally relied on disruption of object naming to define essential language areas. In this study, the authors reviewed the use of a different language task, verb generation, in mapping language. This task has greater use in brain imaging studies and may be used to test aspects of language different from those of object naming. Methods. In 14 patients, cortical stimulation mapping performed using a verb generation task provided a map of language areas in the frontal and temporoparietal cortices. These verb generation maps often overlapped object naming ones and, in many patients, different areas of cortex were found to be involved in the two functions. In three patients, stimulation mapping was performed during the initial performance of the verb generation task and also during learned performance of the task. Parallel to findings of published neuroimaging studies, a larger area of stimulated cortex led to disruption of verb generation in response to stimulation during novel task performance than during learned performance. Conclusions. Results of cortical stimulation mapping closely resemble those of functional neuroimaging when both implement the verb generation task. The precise map of the temporoparietal language cortex depends on the task used for mapping.

scholarly journals Multimodality Word-Finding Distinctions in Cortical Stimulation Mapping

Neurosurgery ◽  
2013 ◽  
Vol 73 (1) ◽  
pp. 36-47 ◽  
Author(s):  
Sandra Serafini ◽  
Merlise Clyde ◽  
Matt Tolson ◽  
Michael M. Haglund
Keyword(s):  
Cortical Stimulation ◽  
Sentence Completion ◽  
Resection Margins ◽  
Dominant Hemisphere ◽  
Language Mapping ◽  
Hierarchical Logistic Regression ◽  
Word Finding ◽  
Cortical Stimulation Mapping ◽  
Multimodality Approach ◽  
Patients With Epilepsy

Abstract BACKGROUND: Cortical stimulation mapping (CSM) commonly uses visual naming to determine resection margins in the dominant hemisphere of patients with epilepsy. Visual naming alone may not identify all language sites in resection-prone areas, prompting additional tasks for comprehensive language mapping. OBJECTIVE: To demonstrate word-finding distinctions between visual, auditory, and reading modalities during CSM and the percentage of modality-specific language sites within dominant hemisphere subregions. METHODS: Twenty-eight patients with epilepsy underwent CSM by the use of visual, auditory, and sentence-completion tasks. Hierarchical logistic regression analyzed errors to identify language sites and provide modality-specific percentages within subregions. RESULTS: The percentage of sites classified as language sites based on auditory naming was twice as high in anterior temporal regions compared with visual naming, marginally higher in posterior temporal areas, and comparable in parietal regions. Sentence completion was comparable to visual and auditory naming in parietal regions and lower in most temporal areas. Of 470 sites tested with both visual and auditory naming, 95 sites were distinctly auditory, whereas 48 sites were distinctly visual. The remaining sites overlapped. CONCLUSION: Distinct cortical areas were found for distinct input modalities, with language sites in anterior tip regions found most often by using auditory naming. The vulnerability of anterior temporal tip regions to resection in this population and distinct sites for each modality suggest that a multimodality approach may be needed to spare crucial language sites, if sparing those sites can be shown to significantly reduce the rate of postoperative language deficits without sacrificing seizure control.

Technical and Practical Aspects of Invasive Recordings and Brain Stimulation

2018 ◽  
pp. 26-37
Author(s):  
Gholam K. Motamedi ◽  
Jean Gotman ◽  
Ronald P. Lesser
Keyword(s):  
Charge Density ◽  
Surface Area ◽  
Brain Stimulation ◽  
Electrode Surface ◽  
Cortical Stimulation ◽  
Basic Principles ◽  
Depth Electrodes ◽  
Cortical Stimulation Mapping ◽  
Drug Resistant Epilepsy ◽  
Intracranial Electrodes

This chapter discusses the technical and practical issues involved in invasive recording and cortical stimulation mapping in patients with drug-resistant epilepsy. It reviews the way in which EEG signals are generated, circumstances when intracranial electrodes are needed, and how such electrodes operate. It also discusses the basic principles of cortical stimulation mapping and different methods of using intracranial electrodes for stimulation purposes, and relevant concepts involved in the process such as charge density and electrode surface area. It reviews different electrodes used for mapping including subdural surface electrodes and depth electrodes.

The Comparison of the Anesthetic Regimens for Functional Direct Cortical Stimulation Mapping during Craniotomy

1998 ◽  
Vol 34 (4) ◽  
pp. 821
Author(s):  
Dong Chan Kim ◽  
Seong Hoon Ko ◽  
Sang Kyi Lee ◽  
Jun Rae Lee ◽  
Young Jin Han ◽  
...  
Keyword(s):  
Cortical Stimulation ◽  
Direct Cortical Stimulation ◽  
Cortical Stimulation Mapping

Cortical stimulation mapping using epidurally implanted thin-film microelectrode arrays

2007 ◽  
Vol 161 (1) ◽  
pp. 118-125 ◽  
Author(s):  
Katiuska Molina-Luna ◽  
Manuel M. Buitrago ◽  
Benjamin Hertler ◽  
Maximilian Schubring ◽  
Florent Haiss ◽  
...  
Keyword(s):  
Thin Film ◽  
Microelectrode Arrays ◽  
Cortical Stimulation ◽  
Cortical Stimulation Mapping

Object naming is a more sensitive measure of speech localization than number counting: Converging evidence from direct cortical stimulation and fMRI

NeuroImage ◽  
2007 ◽  
Vol 37 ◽  
pp. S100-S108 ◽  
Author(s):  
Nicole M. Petrovich Brennan ◽  
Stephen Whalen ◽  
Daniel de Morales Branco ◽  
James P. O'Shea ◽  
Isaiah H. Norton ◽  
...  
Keyword(s):  
Cortical Stimulation ◽  
Object Naming ◽  
Sensitive Measure ◽  
Direct Cortical Stimulation

scholarly journals Electrocorticographic high gamma activity versus electrical cortical stimulation mapping of naming

Brain ◽  
2005 ◽  
Vol 128 (7) ◽  
pp. 1556-1570 ◽  
Author(s):  
Alon Sinai ◽  
Christopher W. Bowers ◽  
Ciprian M. Crainiceanu ◽  
Dana Boatman ◽  
Barry Gordon ◽  
...  
Keyword(s):  
Cortical Stimulation ◽  
Gamma Activity ◽  
High Gamma ◽  
Cortical Stimulation Mapping

Localization of Expressive Language Cortex in a 2-Year-Old Child Using High-Gamma Electrocorticography

2019 ◽  
Vol 34 (13) ◽  
pp. 837-841
Author(s):  
Abbas Babajani-Feremi ◽  
Stephen P. Fulton ◽  
Christen M. Holder ◽  
Asim F. Choudhri ◽  
Frederick A. Boop ◽  
...  
Keyword(s):  
Expressive Language ◽  
Inferior Frontal Gyrus ◽  
Young Patients ◽  
Cortical Stimulation ◽  
Older Children ◽  
Language Mapping ◽  
Language Deficit ◽  
High Gamma ◽  
Cortical Stimulation Mapping ◽  
Language Cortex

Cortical stimulation mapping is the gold standard for presurgical language mapping; however, it cannot be reliably performed in very young patients. Language mapping using noninvasive modalities is also challenging in very young patients. Although utility of language mapping using power of high-gamma in electrocorticographic recordings was demonstrated in adults and older children, there is a gap of knowledge in the ability of this procedure for localizing language-specific cortex in very young patients. We describe a case of a 2-year-old patient who, to our knowledge, is the youngest person to undergo successful high-gamma electrocorticographic presurgical language mapping for localization of the expressive language cortex (Broca area). The surgical plan was to resect a cortical tuber within the left inferior frontal gyrus and there was a strong concern about postoperative language deficit after resection. Presurgical language mapping using noninvasive modalities were attempted without success. Cortical stimulation mapping was not feasible in this patient. Therefore, high-gamma electrocorticography was the only viable option for language mapping, and it successfully localized the expressive language cortex. The patient underwent surgery for resection of the IFG tuber based on results of high-gamma electrocorticography and had no postoperative language deficit. High-gamma electrocorticography can be used for localizing language-specific cortex, especially Broca’s area, in very young patients.

Sign in / Sign up

Export Citation Format

Share Document