Banca de DEFESA: THIAGO DA CRUZ FIGUEIREDO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : THIAGO DA CRUZ FIGUEIREDO
DATA : 23/03/2019
HORA: 14:00
LOCAL: Instituto de Física da Universidade Federal da Bahia
TÍTULO:

Complexity in control and planning of human movement

PALAVRAS-CHAVES:

complex behavior, sensory stimuli, movement patterns

PÁGINAS: 92
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Física
RESUMO:

Abstract: Several studies have shown evidence of complex behavior in the human nervous
system. Despite the complex and highly variable architecture of the nervous system,
humans present motor behaviors that are consistent across subjects and even across tasks.
This indicates that underlying optimization principles are at work, which are responsible for
dealing with many degrees of freedom and with the intrinsically non stationary nature of
sensory inputs. In this study a control model for upper-limb trajectories is presented, which is
based on the segmentation of complex movements in movement elements that maximize
smoothness and minimize movement duration. It is shown that such a model can account for
the movement patterns of several arm reaching and drawing tasks in healthy subjects, as
well as for the strategies of optimization involved in learning a new motor task. Furthermore,
experimental evidence indicates that the complex properties that characterize the model are
an effect of the motor planning process, as opposed to a trivial consequence of the
biomechanical constraints involved in the movement. The results open new possibilities for
monitoring the evolution of subjects along the rehabilitation and motor learning process.

MEMBROS DA BANCA:
Interno - 664720 - ANTONIO FERREIRA DA SILVA
Presidente - 1350143 - JOSE GARCIA VIVAS MIRANDA
Externo ao Programa - 1994820 - RAPHAEL SILVA DO ROSARIO
Interno - 6282496 - ROBERTO FERNANDES SILVA ANDRADE
Interno - 1474625 - ROBERTO RIVELINO DE MELO MORENO