Banca de DEFESA: FABÍOLA RODRIGUES DE FRANÇA CAMPOS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : FABÍOLA RODRIGUES DE FRANÇA CAMPOS
DATA : 08/08/2019
HORA: 09:00
LOCAL: Sala Darwin
TÍTULO:

MOTOR INJURIES OF CENTRAL AND PERIPHERAL ORIGIN INTERFEREM DIFFERENT IN ACURACY AND PRECISION OF TARGETS IN BIOLOGICAL TRAJECTORIES

PALAVRAS-CHAVES:

coupling (interaction, binding) perception, action, biological movement, stroke, peripheral nerve injury.

PÁGINAS: 85
GRANDE ÁREA: Ciências Humanas
ÁREA: Psicologia
RESUMO:

 

Several experimental results suggest that the perception and production of human movement share a common functional network of control in the brain. To study this perception-action interaction, we evaluated the precision and accuracy by conducting a behavioral test to determine targets in similar trajectories, but differed in relation to their velocity profiles: biological (B) and non-biological (NB). The volunteers were asked to estimate the end point of trajectories that had their last part occluded and that differed in relation to the movement: B and NB and direction: ascent (S) and descent (D). Thirty-six volunteers participated in the study: 13 healthy volunteers (M = 2 and F = 11, mean age 41,36 ± 12,91), 12 volunteers with Stroke (M = 6 and F = 6; 51,67 ± 10,13) and 11 volunteers with Peripheral Nerve Injury all males with a mean age of 33,64 ± 7,42. Estimated vector distance was calculated for each trial [DVE (R_n² = X_n² + Y_n²)]. Precision was calculated by the median of the DVE and the accuracy of its dispersion (quartile 75). The results pointed to an interesting finding: the behavioral test was sensitive to point out differences between the biological and non-biological trajectories in the patient groups (stroke and LNP). Patients with stroke differed in the MSB trajectory _(107,14mm) vs MSNB _(164,68mm) (U = 7921; p = 0,001), showing a greater precision in the biological profile trajectory, whereas the LNP patients differed in the MDB trajectory _(103,23mm) vs MDNB _(78,20mm) (U = 7263; p = 0,019) and showed a greater precision in the non-biological profile trajectory. The group of healthy subjects had greater precision when compared to the other groups in all trajectories [X² = 348,06 (2); p <0,001]. Regarding accuracy, healthy individuals and patients with LNP behaved in a similar way and differed from stroke patients [healthy x stroke - X² = 16,800 (3); p = 0,01] and [LNP x stroke - X² = 12,774 (3); p = 0,005]. Using a mixed model it was found that healthy individuals are more exact (precision + accurate) than individuals with LNP and these are more exact than individuals with strokes. Exactitude was greater in detecting descent and biological movements. The results suggest loss of the perception-action coupling, individuals with motor injury may present losses in the biomechanical efficiency of the movement. The origin of the lesion (central or peripheral) seems to affect the recognition of biological movement.

MEMBROS DA BANCA:
Externo à Instituição - ANTONIO PEREIRA JUNIOR - UFPA
Externo à Instituição - EDGARD MORYA - IINN
Presidente - 1216466 - JOHN FONTENELE ARAUJO
Interna - 1871878 - KERSTIN ERIKA SCHMIDT
Externa ao Programa - 350635 - TANIA FERNANDES CAMPOS