putamen & caudate circuits_(human physiology)_presentation_by biomedical association of students...

7/27/2019 Putamen & Caudate Circuits_(Human Physiology)_Presentation_by Biomedical Association of Students for Excellence(BASE)

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Starting With That Great Name ,

Whose Help We Solicit . . .



Putamen & Caudate

Circuits

By:

Asad Ali Siyal

Department of Biomedical Engineering ,

Mehran University of Engineering & Technology

(MUET), Jamshoro, Sindh, Pakistan

[email protected]



Contents:

• Introduction

• Putamen Circuit

• Caudate Circuit

• Abnormalities / Disorder

• Anatomical Structure



INTRODUCTION

Basically there are two major circuits regarding basal ganglia.

•Putamen Circuits

•Caudate Circuits



INTRODUCTION



PUTAMEN CIRCUIT

INTRODUCTION:

• The principal pathway through basal ganglia for executing learned

pattern of movements• It takes inputs mainly from those parts of brain which are adjacent to the

primary motor cortex

LOCATION:

• It begin mainly in premotor and supplementary motor areas of motor

cortex as well as in primary somato - sensory areas of sensory cortex



PUTAMEN CIRCUIT



PUTAMEN CIRCUIT

This schematic drawing depicts the relationship between the putamen and the caudate.

Note the continuity of the putamen and the head of the caudate nucleus

rostroventrally



PUTAMEN CIRCUIT

FUNCTION:

• The main function of the putamen is to regulate movements and

influence various types of learning.

• The putamen also plays a role in degenerative neurological disorders,

such as Parkinson's disease.

• It works in conjunction to control many types of motor skills.



CAUDATE CIRCUIT

INTRODUCTION: • Caudate neucleus is actually the cognitive contorl of motor activity

• It works with the putamen to receive the input from association area of brain (cerebral cortex)

LOCATION:

•

It extends in all lobes of cerebrum starting anteriorly in frontal lobe• Then passing posteriorly through the parietal and occipital lobes, and

finally curving forward again like a letter “c” into temporal lobes.



CAUDATE CIRCUIT



CAUDATE CIRCUIT

This is a transverse section of the striatum from a structural MR image.

The striatum includes the caudate nucleus (top) and putamen (right) and

the globus pallidus (left).



CAUDATE CIRCUIT

FUNCTION:

• It is considered the "entrance" to the basal ganglia.

• Caudate nucleus plays a major role in cognitive control of motor activity.

• Cognitive control of motor activity determines which patterns of

movement will be used together, and in what sequence to axhieve a

complex goal.



ABNORMALITIES / DISORDER

Putamen Circuit:When any portion of this circuit is damaged or blocked certain pattern

of learned movements become severely abnormal.

Caudate Circuit:When any portion of this circuit is damaged or blocked thinking

processes become severely abnormal.



ANATOMICAL STRUCTURE



ANY

QUESTIONS…??



ANY

QUESTIONS…??

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