J W Gnadt
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Explore the profile of J W Gnadt including associated specialties, affiliations and a list of published articles.
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24
Citations
1084
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Recent Articles
1.
Ramcharan E, Gnadt J, Sherman S
Proc Natl Acad Sci U S A
. 2005 Aug;
102(34):12236-41.
PMID: 16099832
There is a strong correlation between the behavior of an animal and the firing mode (burst or tonic) of thalamic relay neurons. Certain differences between first- and higher-order thalamic relays...
2.
Jackson M, Litvak O, Gnadt J
Neural Netw
. 2002 Jan;
14(10):1357-76.
PMID: 11771717
Fundamental mechanisms of a brain circuit's operation can be revealed by quantitative analysis of the system's dynamic behavior. This approach is particularly useful for investigation of motor circuits, which generate...
3.
Gnadt J, Jackson M, Litvak O
J Neurophysiol
. 2001 Aug;
86(2):724-40.
PMID: 11495946
To more thoroughly describe the system dynamics for the saccadic circuit in monkeys, we have determined the frequency response by applying a frequency modulated train of microstimulation pulses in the...
4.
Ramcharan E, Gnadt J, Sherman S
Vis Neurosci
. 2001 Jun;
18(2):253-8.
PMID: 11417800
Saccadic suppression is the reduced visibility that occurs during saccadic eye movements. Recent psychophysical studies have suggested that this is due to a reduction in responsiveness of magnocellular (M), but...
5.
Jackson M, Gnadt J
J Neurosci Methods
. 2001 Mar;
87(2):137-45.
PMID: 11230810
The object-oriented graphical programming language LabView was used to implement the numerical solution to a computational model of saccade generation in primates. The computational model simulates the activity and connectivity...
6.
Ramcharan E, Cox C, Zhan X, Sherman S, Gnadt J
J Neurophysiol
. 2000 Oct;
84(4):1982-7.
PMID: 11024091
We show for the first time with in vitro recording that burst firing in thalamic relay cells of the monkey is evoked by activation of voltage-dependent, low threshold Ca(2+) spikes...
7.
Ramcharan E, Gnadt J, Sherman S
Vis Neurosci
. 2000 Apr;
17(1):55-62.
PMID: 10750826
Thalamic relay cells fire in two distinct modes, burst or tonic, and the operative mode is dictated by the inactivation state of low-threshold, voltage-gated, transient (or T-type) Ca2+ channels. Tonic...
8.
Gnadt J, Beyer J
Neuroreport
. 1998 Mar;
9(2):233-8.
PMID: 9507961
We have recorded identified cortico-tectal neurons from the primate parietal cortex to determine whether the depth-related activity in the intraparietal sulcus (area LIP) is transmitted to the superior colliculus. Traditional...
9.
Gnadt J, Lu S, Breznen B, Basso M, Henriquez V, Evinger C
Exp Brain Res
. 1998 Feb;
116(3):389-98.
PMID: 9372288
In this study we used microstimulation to investigate the influence of the superior colliculus on the trigeminal blink reflex. We report that stimulation in the intermediate to deep layers of...
10.
Breznen B, Gnadt J
Exp Brain Res
. 1998 Jan;
117(2):181-91.
PMID: 9419065
We present results of theoretical analysis and computational simulations of two models of the saccadic burst generator: the Scudder model and the Jurgens model. We used the experimental paradigm of...