Multimodal responses induced by cortical stimulation of the parietal lobe: a stereo-electroencephalography study

被引:57
作者
Balestrini, Simona [1 ]
Francione, Stefano [2 ]
Mai, Roberto [2 ]
Castana, Laura [2 ]
Casaceli, Giuseppe [2 ]
Marino, Daniela [3 ]
Provinciali, Leandro [1 ]
Cardinale, Francesco [2 ]
Tassi, Laura [2 ]
机构
[1] Marche Polytech Univ, Dept Expt & Clin Med, Neurol Clin, I-60100 Ancona, Italy
[2] Osped Niguarda Ca Granda, Claudio Munari Epilepsy Surg Ctr, Milan, Italy
[3] Univ Siena, Dept Neurol & Sensorial Sci, I-53100 Siena, Italy
关键词
stereo-EEG; parietal lobe; clinical neurophysiology; associational areas; sensory systems; ELECTRICAL-STIMULATION; FUNCTIONAL-ANATOMY; CINGULATE CORTEX; VISUOSPATIAL ATTENTION; INTRAPARIETAL SULCUS; MOTION PERCEPTION; SPATIAL ATTENTION; CEREBRAL-CORTEX; MOTOR; AREAS;
D O I
10.1093/brain/awv187
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
The functional complexity of the parietal lobe still represents a challenge for neurophysiological and functional neuroimaging studies. While the somatosensory functions of the anterior parietal cortex are well established, the posterior parietal cortex has a relevant role in processing the sensory information, including visuo-spatial perception, visual attention, visuo-motor transformations and other complex and not completely understood functions. We retrospectively analysed all the clinical manifestations induced by intracerebral bipolar electrical stimulation in 172 patients suffering from drug-resistant focal epilepsy (mean age 25.6, standard deviation 11.6; 44% females and 56% males) with at least one electrode stereotactically implanted in the parietal cortex. A total of 1186 electrical stimulations were included in the analysis, of which 88 were subsequently excluded because of eliciting pathological electric activity or inducing ictal symptomatology. In the dominant parietal lobe, clinical responses were observed for 56 (25%) of the low-frequency stimulations and for 76 (50%) of the high-frequency stimulations. In the non-dominant parietal lobe, 111 (27%) low-frequency and 176 (55%) high-frequency stimulations were associated with a clinical response. Body scheme alteration was the only clinical effect showing a lateralization, as they were evoked only in the non-dominant hemisphere. The occurrence of somatosensory sensations, motor symptoms, dysarthria and multimodal responses were significantly associated with stimulation of the postcentral gyrus (odds ratio: 5.83, P50.001; odds ratio: 8.77, P50.001; odds ratio: 5.44, P = 0.011; odds ratio: 8.33, P = 0.006; respectively). Stimulation of the intraparietal sulcus was associated with the occurrence of sensory illusions or hallucinations (odds ratio: 8.68, P50.001) and eyeball/eyelid movements or sensations (odds ratio: 4.35, P = 0.047). To our knowledge, this is the only currently available complete revision of electrical stimulation of the entire parietal cortex with the aim to evaluate the neurophysiology of this relevant brain region. Our analysis offers a general overview of the multiple roles of the parietal cortex and supports its crucial involvement in different networks related to complex integrative functions.
引用
收藏
页码:2596 / 2607
页数:12
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