Head Fixed Field Coil System For Measuring Eye Movements in Freely Moving Monkeys

2006 ◽  
Author(s):  
Dmitri Ogorodnikov ◽  
Sergey Tarasenko ◽  
Sergei Yakushin ◽  
Bernard Cohen ◽  
Theodore Raphan
Keyword(s):  
Eye Movements ◽  
Fixed Field ◽  
Field Coil ◽  
Coil System ◽  
Freely Moving

Neostriatal administration of somatostatin: differential effect of small and large doses on behavior and motor control

1977 ◽  
Vol 55 (2) ◽  
pp. 234-242 ◽  
Author(s):  
M. Rezek ◽  
V. Havlicek ◽  
L. Leybin ◽  
C. Pinsky ◽  
E. A. Kroeger ◽  
...  
Keyword(s):  
Motor Control ◽  
Eye Movements ◽  
Slow Wave ◽  
Rem Sleep ◽  
Differential Effect ◽  
Slow Wave Sleep ◽  
Small Doses ◽  
Freely Moving ◽  
Behavioral Excitation ◽  
Higher Doses

The administration of small doses of somatostatin (SRIF) (0.01 and 0.1 μg) into the neostriatal complex of unrestrained, freely moving rats induced general behavioral excitation associated with a variety of stereotyped movements, tremors, and a reduction of rapid eye movements (REM) and deep slow wave sleep (SWS). In contrast, the higher doses of SRIF (1.0 and 10.0 μg) caused movements to be uncoordinated and frequently induced more severe difficulties in motor control such as contralateral hemiplegia-in-extension which restricted or completely prevented the expression of normal behavioral patterns. As a result, the animals appeared drowsy and inhibited. Analysis of the sleep-waking cycle revealed prolonged periods of a shallow SWS while REM sleep and deep SWS were markedly reduced; electroencephalogram recordings revealed periods of dissociation from behavior. The administration of endocrinologically inactive as well as the active analogues of SRIF failed to induce effects comparable with those observed after the administration of the same dose of the native hormone (10.0 μg).

Design and R&D for the liquid nitrogen cooled poloidal field coil system for the Compact Ignition Tokamak (CIT)

1988 ◽  
Vol 24 (2) ◽  
pp. 1241-1243 ◽  
Author(s):  
R.J. Thome ◽  
R.D. Pillsbury ◽  
E.S. Bobrov ◽  
J.E.C. Williams ◽  
R. Vieira ◽  
...  
Keyword(s):  
Liquid Nitrogen ◽  
Poloidal Field ◽  
Field Coil ◽  
Coil System

scholarly journals Dynamics of gaze control during prey capture in freely moving mice

2020 ◽  
Author(s):  
Angie M. Michaiel ◽  
Elliott T.T. Abe ◽  
Cristopher M. Niell
Keyword(s):  
Eye Movements ◽  
Visual Processing ◽  
Visual Information ◽  
Prey Capture ◽  
Active Vision ◽  
Head Movements ◽  
Visual Scene ◽  
Specific Point ◽  
Binocular Field ◽  
Freely Moving

ABSTRACTMany studies of visual processing are conducted in unnatural conditions, such as head- and gaze-fixation. As this radically limits natural exploration of the visual environment, there is much less known about how animals actively use their sensory systems to acquire visual information in natural, goal-directed contexts. Recently, prey capture has emerged as an ethologically relevant behavior that mice perform without training, and that engages vision for accurate orienting and pursuit. However, it is unclear how mice target their gaze during such natural behaviors, particularly since, in contrast to many predatory species, mice have a narrow binocular field and lack foveate vision that would entail fixing their gaze on a specific point in the visual field. Here we measured head and bilateral eye movements in freely moving mice performing prey capture. We find that the majority of eye movements are compensatory for head movements, thereby acting to stabilize the visual scene. During head turns, however, these periods of stabilization are interspersed with non-compensatory saccades that abruptly shift gaze position. Analysis of eye movements relative to the cricket position shows that the saccades do not preferentially select a specific point in the visual scene. Rather, orienting movements are driven by the head, with the eyes following in coordination to sequentially stabilize and recenter the gaze. These findings help relate eye movements in the mouse to other species, and provide a foundation for studying active vision during ethological behaviors in the mouse.

A Demountable Toroidal Field Coil System for a Commercial Tokamak Reactor

1985 ◽  
Vol 8 (1P2A) ◽  
pp. 838-842 ◽  
Author(s):  
T.F. Yang ◽  
R.J. LeClaire ◽  
E.S. Bobrov ◽  
L. Bromberg ◽  
D.R. Cohn ◽  
...  
Keyword(s):  
Toroidal Field ◽  
Tokamak Reactor ◽  
Field Coil ◽  
Coil System

Impact of the Design Point on the Poloidal Field Coil System for the CIT (Compact ignition Tokamak)

1991 ◽  
Vol 19 (3P2A) ◽  
pp. 1065-1069
Author(s):  
R.D. Pillsbury ◽  
R.J. Thome ◽  
B.A. Smith
Keyword(s):  
Poloidal Field ◽  
Design Point ◽  
Field Coil ◽  
Coil System
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