{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

MVS 320 final review - -motor control is the study of how...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
-motor control is the study of how the body moves in space (movement) and stabilizing the body in space (posture) includes task-specific movements - Hierarchical processing: -motor areas of the cerebral cortex at the top - Parallel Processing: -influence spinal cord directly and indirectly to induce voluntary movements -descending pathways through the brain stem influence signals reaching descending pathways of the spinal cord and then travel to muscles - Distributed control -uses many control centers to maintain voluntary movement. Different centers involved in planning, execution of movement - Integration: -the processing of multiple sources of information, repackaging, and transmitting, occurs at different levels of the nervous system in the form of electrical impulses. - Adaption: - the ability of the CNS to learn or change over time occurring at the cellular level, reflex level, and whole body level; neural plasticity - Motor Equivalence -the capacity to perform a given task in a variety of ways, possible because of degrees of freedom in the motor system - Degrees of Freedom - number of dimensions in which the system can independently vary, the degrees of freedom problem involves selection of patterns provided by motor equivalence to successfully perform a task 3 shoulder, 2 elbow, 2 wrist - Invariant characteristics of movement -bell shaped, time symmetric velocity curve, equal time spent accelerating and decelerating limb, minimize jerk, and most energy-efficient means of producing a movement -moving in the same way every time -involve MAP for discrete (triphasic) versus cyclic movements (rhythmic), the bell shaped velocity profile, and aperture formation during reach and grasp (deceleration phase, modified by other factors) -Kinematic -describes motion, not concerned with the forces required to produce them
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
- Kinetics -take forces producing motion into account position, velocity, acceleration - Reach and Grasp Movement -reach (transport) phase, grasp (aperture formation) phase -max aperture is reached during deceleration phase of transport phase, increases with increasing object size, loss of vision, and increasing speed of transport phase - Afferent System - provides sensory input, CNS integrates afferent information and generates a response -Efferent system -carries out the response, feedback during/after response communicated back up afferent system - Spinal Cord -gray matter in dorsal horns contains visceral sensory nuclei, somatic sensory nuclei, and carries afferent sensory information to the brainstem - dorsal horns afferent sensory information - ventral horns relays efferent information (somatic) contains cell bodies, dendrites, and interneurons of efferent neurons -local interneurons in the gray matter integrate sensory information into motor output -lateral horns contain autonomic efferent nuclei and the ventral contain somatic motor nuclei -Dorsal root ganglion contain cell bodies of afferent neurons - Brainstem -medulla oblongata -controls autonomic functions such as blood pressure, breathing -pons
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern