The dorsal tegmental nucleus of Gudden and angular velocity integration in the head direction system.

2005 ◽  
Author(s):  
Joshua Pope Bassett
Keyword(s):  
Angular Velocity ◽  
Head Direction ◽  
Tegmental Nucleus ◽  
Dorsal Tegmental Nucleus

In vitro electrophysiology of neurons in the lateral dorsal tegmental nucleus

1989 ◽  
Vol 22 (3) ◽  
pp. 557-560 ◽  
Author(s):  
K.S. Wilcox ◽  
S.J. Grant ◽  
B.A. Burkhart ◽  
G.R. Christoph
Keyword(s):  
Tegmental Nucleus ◽  
Dorsal Tegmental Nucleus

scholarly journals Modeling Attractor Deformation in the Rodent Head-Direction System

2000 ◽  
Vol 83 (6) ◽  
pp. 3402-3410 ◽  
Author(s):  
Jeremy P. Goodridge ◽  
David S. Touretzky
Keyword(s):  
Angular Velocity ◽  
Primary Source ◽  
Inhibitory Neurons ◽  
Surprising Result ◽  
Head Direction ◽  
Anterior Thalamus ◽  
Attractor Dynamics ◽  
Cell Firing

We present a model of the head-direction circuit in the rat that improves on earlier models in several respects. First, it provides an account of some of the unique characteristics of head-direction (HD) cell firing in the lateral mammillary nucleus and the anterior thalamus. Second, the model functions without making physiologically unrealistic assumptions. In particular, it implements attractor dynamics in postsubiculum and lateral mammillary nucleus without directionally tuned inhibitory neurons, which have never been observed in vivo, and it integrates angular velocity without the use of multiplicative synapses. The model allows us to examine the relationships among three HD areas and various properties of their representations. A surprising result is that certain combinations of purported HD cell properties are mutually incompatible, suggesting that the lateral mammillary nucleus may not be the primary source of head direction input to anterior thalamic HD cells.

The effects of bilateral lesions to the dorsal tegmental nucleus on spatial learning in rats.

2013 ◽  
Vol 127 (6) ◽  
pp. 867-877 ◽  
Author(s):  
Jessica A. Dwyer ◽  
Matthew L. Ingram ◽  
Anna C. Snow ◽  
Christina M. Thorpe ◽  
Gerard M. Martin ◽  
...  
Keyword(s):  
Spatial Learning ◽  
Tegmental Nucleus ◽  
Bilateral Lesions ◽  
Dorsal Tegmental Nucleus

“Dead Reckoning,” Landmark Learning, and the Sense of Direction: A Neurophysiological and Computational Hypothesis

1991 ◽  
Vol 3 (2) ◽  
pp. 190-202 ◽  
Author(s):  
B. L. McNaughton ◽  
L. L. Chen ◽  
E. J. Markus
Keyword(s):  
Angular Velocity ◽  
Dead Reckoning ◽  
Place Cells ◽  
Optimal Trajectories ◽  
Head Direction ◽  
Sense Of Direction ◽  
System A ◽  
Linearly Independent ◽  
Local View ◽  
Landmark Learning

Behavioral and neurophysiological evidence strongly suggests that, within certain limits, rodents and humans can keep track of their directional heading relative to an inertial, and hence allocentric coordinate system. This “sense of direction” appears to involve the integration of angular velocity signals that arise primarily in the vestibular system. A hypothesis is proposed in which the integration process, an operation that may be difficult for neurons to implement, is replaced by a linear associative mapping, an operation that is at least theoretically easy to implement with neurons. The proposed system makes use of a set of linearly independent vectors representing the combination of the current head direction, and head angular velocity representations to “recall” the resulting head direction. It is then proposed that visual landmarks become incorporated into the directional system, enabling both the correction of cumulative error and, ultimately, the computation of novel, optimal trajectories between locations. According to the hypothesis, this occurs through the association of hippo-campal “local-view” cells (i.e., direction selective “place cells”) with “head-direction” cells located downstream in the dorsal presubiculum. The possible neurophysiological and neuroan-atomical bases for the proposed system are discussed.

The dorsal tegmental nucleus: an axoplasmic transport study

1984 ◽  
Vol 310 (1) ◽  
pp. 123-132 ◽  
Author(s):  
Rita Liu ◽  
Lisa Chang ◽  
Gregory Wickern
Keyword(s):  
Axoplasmic Transport ◽  
Transport Study ◽  
Tegmental Nucleus ◽  
Dorsal Tegmental Nucleus
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