Selective impairment of express saccade generation in patients with schizophrenia

1993 ◽  
Vol 97 (2) ◽  
Author(s):  
Jon Currie ◽  
Sarah Joyce ◽  
Paul Maruff ◽  
Ben Ramsden ◽  
Cheryl McArthur-Jackson ◽  
...  
Keyword(s):  
Express Saccade ◽  
Selective Impairment ◽  
Saccade Generation

An examination of the variables that affect express saccade generation

2004 ◽  
Vol 21 (2) ◽  
pp. 119-127 ◽  
Author(s):  
PETER H. SCHILLER ◽  
JOHANNES HAUSHOFER ◽  
GEOFFERY KENDALL
Keyword(s):  
Rhesus Monkeys ◽  
Target Onset ◽  
Express Saccades ◽  
Express Saccade ◽  
Saccadic System ◽  
Fixation Spot ◽  
Temporal Asynchrony ◽  
Saccade Generation ◽  
Gap Time

The frequency with which express saccades are generated under a variety of conditions in rhesus monkeys was examined. Increasing the gap time between fixation spot termination and target onset increased express saccade frequency but was progressively less effective in doing so as the number of target positions in the sample was increased. Express saccades were rarely produced when two targets were presented simultaneously and the choice of either of which was rewarded; a temporal asynchrony of only 17 ms between the targets reinstated express saccade generation. Express saccades continued to be generated when the vergence or pursuit systems was coactivated with the saccadic system.

scholarly journals The integration of visual and auditory cues for express saccade generation

2010 ◽  
Vol 10 (7) ◽  
pp. 505-505
Author(s):  
P. Schiller ◽  
M. Kwak
Keyword(s):  
Express Saccade ◽  
Auditory Cues ◽  
Saccade Generation

scholarly journals Impairment but not abolishment of express saccades after unilateral or bilateral inactivation of the frontal eye fields

2020 ◽  
Vol 123 (5) ◽  
pp. 1907-1919 ◽  
Author(s):  
Suryadeep Dash ◽  
Tyler R. Peel ◽  
Stephen G. Lomber ◽  
Brian D. Corneil
Keyword(s):  
Superior Colliculus ◽  
Peak Velocity ◽  
Critical Role ◽  
Frontal Eye Fields ◽  
Express Saccades ◽  
Express Saccade ◽  
Cortical Cooling ◽  
Saccade Generation

Express saccades are the shortest-latency saccade. The frontal eye fields (FEF) are thought to promote express saccades by presetting the superior colliculus. Here, by reversibly inactivating the FEF either unilaterally or bilaterally via cortical cooling, we support this by showing that the FEF plays a facilitative but not critical role in express saccade generation. We also found that FEF inactivation lowered express saccade peak velocity, emphasizing a contribution of the FEF to express saccade kinematics.

scholarly journals Selective Impairment of Taurine Transport by Cyclosporin A in a Human Placental Cell Line

1992 ◽  
Vol 32 (1) ◽  
pp. 125-127 ◽  
Author(s):  
Sammanda Ramamoorthy ◽  
Frederick H Leibach ◽  
Virendra B Mahesh ◽  
Vadivel Ganapathy
Keyword(s):  
Cyclosporin A ◽  
Cell Line ◽  
Taurine Transport ◽  
Placental Cell ◽  
Selective Impairment

Selective impairment of transitive gestures: An unusual case of apraxia

Neurocase ◽  
1999 ◽  
Vol 5 (5) ◽  
pp. 447-458 ◽  
Author(s):  
Catherine Dumont ◽  
Bernadette Ska ◽  
Alessandra Schiavetto
Keyword(s):  
Unusual Case ◽  
Selective Impairment ◽  
Transitive Gestures

Ulnar Neuropathies In Rheumatoid Arthritis

HAND ◽  
1978 ◽  
Vol os-10 (1) ◽  
pp. 77-81 ◽  
Author(s):  
A. R. M. Upton ◽  
J. Darracott ◽  
F. A. Bianchi
Keyword(s):  
Rheumatoid Arthritis ◽  
Ulnar Nerve ◽  
Joint Disease ◽  
Motor Axons ◽  
Ulnar Deviation ◽  
Metacarpophalangeal Joints ◽  
Hand Muscles ◽  
Small Hand ◽  
Selective Impairment

Summary A loss of functional motor axons in the median and ulnar nerves occurred in half of thirty-three patients with rheumatoid arthritis. Weakness of small hand muscles may predispose to the development of ulnar deviation of the fingers in patients with joint disease at the radio-ulnar and metacarpophalangeal joints. There is no evidence that spasm of small hand muscles is a significant cause of ulnar deviation of the fingers in rheumatoid arthritis. Ulnar deviation of the fingers in rheumatoid arthritis is not due to selective impairment of the ulnar nerve or the deep palmar branch of the ulnar nerve even though ulnar deviation of the fingers can occur in association with such lesions and in the absence of joint disease.

Progressive Ideomotor Apraxia - Evidence for a Selective Impairment of the Action Production System

1995 ◽  
Vol 27 (2) ◽  
pp. 213-236 ◽  
Author(s):  
S.Z. Rapcsak ◽  
C. Ochipa ◽  
K.C. Anderson ◽  
H. Poizner
Keyword(s):  
Production System ◽  
Ideomotor Apraxia ◽  
Selective Impairment
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