Characteristics of the influences of the centrum medianum of the thalamus on the neuronal activity of the caudate nucleus

1995 ◽  
Vol 25 (2) ◽  
pp. 111-116
Author(s):  
A. V. Mikhailov
Keyword(s):  
Caudate Nucleus ◽  
Neuronal Activity ◽  
Centrum Medianum

Effect of dentate stimulation on neuronal activity in the caudate nucleus

1969 ◽  
Vol 25 (2) ◽  
pp. 268-281 ◽  
Author(s):  
Robert A Ratcheson ◽  
Choh-Luh Li
Keyword(s):  
Caudate Nucleus ◽  
Neuronal Activity

Excitatory and inhibitory effects of dopamine on neuronal activity of the caudate nucleus neurons in vitro

1987 ◽  
Vol 418 (2) ◽  
pp. 262-272 ◽  
Author(s):  
Akinori Akaike ◽  
Yukihiro Ohno ◽  
Masashi Sasa ◽  
Shuji Takaori
Keyword(s):  
Caudate Nucleus ◽  
Neuronal Activity ◽  
Inhibitory Effects

scholarly journals Interpretive monitoring in the caudate nucleus

eLife ◽  
2014 ◽  
Vol 3 ◽  
Author(s):  
Marianna Yanike ◽  
Vincent P Ferrera
Keyword(s):  
Caudate Nucleus ◽  
Dynamic Behavior ◽  
Neuronal Activity ◽  
Continuous Monitoring ◽  
Dynamic Environment ◽  
Ongoing Behavior ◽  
Cognitive Monitoring ◽  
Behavioral Monitoring

In a dynamic environment an organism has to constantly adjust ongoing behavior to adapt to a given context. This process requires continuous monitoring of ongoing behavior to provide its meaningful interpretation. The caudate nucleus is known to have a role in behavioral monitoring, but the nature of these signals during dynamic behavior is still unclear. We recorded neuronal activity in the caudate nucleus in monkeys during categorization behavior that changed rapidly across contexts. We found that neuronal activity maintained representation of the identity and context of a recently categorized stimulus, as well as interpreted the behavioral meaningfulness of the maintained trace. The accuracy of this cognitive monitoring signal was highest for behavior for which subjects were prone to make errors. Thus, the caudate nucleus provides interpretive monitoring of ongoing behavior, which is necessary for contextually specific decisions to adapt to rapidly changing conditions.

scholarly journals Evoked Neuronal Activity Accompanied by Transmitter Release Increases Oxygen Concentration in Rat Striatum in vivo but Not in vitro

1992 ◽  
Vol 12 (4) ◽  
pp. 629-637 ◽  
Author(s):  
Jayne B. Zimmerman ◽  
Robert T. Kennedy ◽  
R. Mark Wightman
Keyword(s):  
Electrical Stimulation ◽  
Caudate Nucleus ◽  
Neuronal Activity ◽  
Brain Slices ◽  
Rat Striatum ◽  
Initial Increase ◽  
Striatal Slices ◽  
Carbon Fiber Microelectrode ◽  
Stimulation Of

Dopamine and oxygen (O2) were measured in the caudate nucleus of anesthetized rats and in striatal slices during electrical stimulation. Simultaneous electrochemical detection of dopamine and O2 was accomplished with fast-scan cyclic voltammetry at a Nafion-coated carbon-fiber microelectrode. Stimulation of the medial forebrain bundle resulted in synaptic overflow of dopamine in the caudate nucleus. At the same time, O2 concentration increased in the extracellular fluid with two separate phases. The amplitude of the initial increase directly correlated with the frequency of the stimulus, with the time of maximum concentration reproducible across a range of frequencies. The second increase occurred at later times with a more random amplitude and with a broad, variable shape. Agents which blocked vasodilation affected both phases: Atropine attenuated the initial increase, while the second feature was nearly absent after theophylline. Yohimbine and α-methyl- p-tyrosine did not affect the O2 responses. Local electrical stimulation of the slice preparation also resulted in dopamine overflow, but a prolonged decrease in O2 concentration accompanied this event. Striatal field stimulation in vivo produced changes in O2 concentration dependent on the relative position of the stimulating and working electrodes, but none of the responses resembled that seen in the caudate slice. Thus, while measurements in brain slices show O2 consumption as a result of stimulated neuronal activity, an apparent elevation of local cerebral blood flow during and after stimulation dominate the in vivo response.

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