scholarly journals S-1. Evoked Cortical Responses after the Stimulation of Ventrolateral Nucleus of Human Thalamus

1966 ◽  
Vol 8 ◽  
pp. 291-291
Author(s):  
Akira NISHIMOTO ◽  
Keizo MATSUMOTO ◽  
Takashi OHOMOTO
2019 ◽  
Author(s):  
Emilia Toth ◽  
Ganne Chaitanya ◽  
Sandipan Pati

AbstractDirect electrical stimulation (DES) of the cortex is a clinically indispensable brain mapping technique that provides reliable information about the distribution of eloquent cortex and its connectivity to the white matter bundles. Here we present a technical report on mapping the short latency cortical responses to stimulation of the ventral anterior nucleus of human thalamus. Reliable downstream responses were noted in the regions connected to the ventral anterior nucleus i.e. superior and inferior frontal gyri, supplementary motor area and limbic substructures (cingulate gyrus and hippocampus).


NeuroImage ◽  
2007 ◽  
Vol 34 (2) ◽  
pp. 743-763 ◽  
Author(s):  
R. Dowman ◽  
T. Darcey ◽  
H. Barkan ◽  
V. Thadani ◽  
D. Roberts

2005 ◽  
Vol 15 (4) ◽  
pp. 493-499 ◽  
Author(s):  
H.G. Sachs ◽  
F. Gekeler ◽  
H. Schwahn ◽  
W. Jakob ◽  
M. Köhler ◽  
...  

Purpose During the course of the development of visual prostheses, subretinal stimulation films were implanted in micropigs in order to prove the feasibility of subretinal electrical stimulation with subsequent cortical response. One aim was to demonstrate that epidural recording of visual evoked potentials is possible in the micropig. Methods Film-bound stimulation electrode arrays were placed in the subretinal space of micropigs. This enabled the retina to be stimulated subretinally. Since conventional visual evoked potential (VEP) measuring is virtually impossible in the pig from the neurosurgical point of view, epidural recording electrode arrays were positioned over the visual cortex as permanent electrodes. Results The feasibility of temporary implantation of film-bound stimulation electrode arrays was successfully demonstrated in the micropig model. On stimulation with monopolar voltage pulses (1000 to 3000 mV), reproducible epidural VEP measurements (5 to 10 μV) were detected. Conclusions The feasibility of subretinal stimulation of the retina was demonstrated in a retinal model that is similar to the human retina. This animal model therefore offers a suitable means of studying the tolerability of stimulation situations in the course of visual prosthesis development.


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