Monocularly Evoked Cortical Potentials to Simultaneous Stimulation of Central and Peripheral Human Retina with Different Patterns

1981 ◽  
pp. 305-312 ◽  
Author(s):  
C. Teping ◽  
A. Groneberg
Keyword(s):  
Human Retina ◽  
Simultaneous Stimulation ◽  
Evoked Cortical Potentials ◽  
Stimulation Of ◽  
Cortical Potentials

Monocular and Binocular Visual Evoked Potentials before and after Cataract Surgery

1979 ◽  
Vol 49 (3) ◽  
pp. 699-704
Author(s):  
J. L. Andreassi ◽  
S. S. Zalkind ◽  
J. A. Gallichio ◽  
N. E. Young
Keyword(s):  
Evoked Potentials ◽  
Cataract Surgery ◽  
Visual Evoked Potentials ◽  
Mature Cataract ◽  
Before And After ◽  
Evoked Cortical Potentials ◽  
Stimulation Of ◽  
Visual Evoked ◽  
Cortical Potentials

Visual evoked cortical potentials (VEPs) were recorded from an individual with a mature cataract in one eye. Stimulation was both monocular and binocular and VEPs were obtained from three occipital scalp sites. Comparisons of recordings taken prior to cataract removal and after removal showed a dramatic increase in amplitude of potentials derived through stimulation of the affected eye. Slight differences in hemispheric amplitude prior to surgery suggest a greater degree of opacity in one portion of the affected lens.

Effect of Serum from Schizophrenics on Evoked Cortical Potentials in the Rat

1965 ◽  
Vol 111 (473) ◽  
pp. 339-344 ◽  
Author(s):  
D. Stenhouse ◽  
R. Antebi ◽  
E. M. A. Dear ◽  
R. N. Herrington ◽  
C. McCance
Keyword(s):  
Cerebral Cortex ◽  
Rat Cerebral Cortex ◽  
Sensory Area ◽  
Normal Individuals ◽  
Schizophrenic Patients ◽  
Evoked Cortical Potentials ◽  
Stimulation Of ◽  
Cortical Potentials

German (1961, 1963) reported that serum from schizophrenic patients, in contrast to that from normal individuals and non-schizophrenic patients, when applied topically to the rat cerebral cortex, increased the amplitude of potentials evoked in the somato-sensory area by stimulation of the contralateral forepaw. Furthermore, similar changes were found when urine extracts were tested in the same manner (German and Kemali, 1963; Kemali, 1964).

Stable Abnormalities in the Lateralisation of early Cortical Somatosensory Evoked Potentials in Schizophrenic Patients

1985 ◽  
Vol 146 (6) ◽  
pp. 585-593 ◽  
Author(s):  
J. E. Cooper ◽  
H. Andrews ◽  
C. Barber
Keyword(s):  
Evoked Potentials ◽  
Somatosensory Evoked Potentials ◽  
Tactile Stimulus ◽  
The Other ◽  
Technical Problems ◽  
Affective Illness ◽  
Schizophrenic Patients ◽  
Evoked Cortical Potentials ◽  
Stimulation Of ◽  
Cortical Potentials

SummaryDuring the investigation of somatosensory evoked cortical potentials arising from a complex vibro-tactile stimulus to the forefingers, an abnormal lack of lateralisation of response was found in 10 out of 21 schizophrenic patients. Eight patients with severe affective illness all had the expected degree of lateralisation of cortical potentials, as did 12 out of 15 normals. Three normals and 3 schizophrenic patients had a loss of lateralisation of the evoked response on stimulation of one hand but a normal lateralisation on stimulation of the other. The considerable technical problems of this and related techniques are discussed, but it is suggested that further exploration of this technique is justified. At this stage, no conclusion can be drawn about the cause of the abnormalities.

Steady-state visual evoked cortical potentials from stimulation of visual field quadrants

1992 ◽  
Vol 79 (2) ◽  
pp. 151-160 ◽  
Author(s):  
Michael Bradnam ◽  
David Keating ◽  
Donald Montgomery ◽  
Aled Evans ◽  
Bertil Damato ◽  
...  
Keyword(s):  
Steady State ◽  
Visual Field ◽  
Evoked Cortical Potentials ◽  
Stimulation Of ◽  
Visual Evoked ◽  
Cortical Potentials

Comparison of cortical potentials evoked by mechanical and electrical stimulation of the human oesophagus

1998 ◽  
Vol 114 ◽  
pp. A766
Author(s):  
A. Hobson ◽  
S. Sarkar ◽  
O. Aziz ◽  
P. Furlong ◽  
J. Barlow ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Stimulation Of ◽  
Cortical Potentials
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