Research advances on the duration aftereffect / 生理学报

Recent sensory history plays a critical role in the perception of event duration. For example, repetitive exposure to a particular duration leads to the distortion of subsequent duration perception. This phenomenon, termed duration adaptation, induces a robust repulsive duration aftereffect. In particular, adaptation to relatively long sensory events shortens the perceived duration of a subsequent event, while adaptation to relatively short sensory events lengthens the perception of subsequent event durations. This phenomenon implies the plasticity of duration perception and offers important clues for revealing the cognitive neural mechanism of duration perception. Duration aftereffect has received more and more attention in recent years. In this review, we introduce recent research advances in our understanding of duration aftereffect, especially with regards to its manifestations, origin, and cognitive neural mechanisms. We also propose possible directions for future research. In sum, we posit that studies on the duration aftereffect phenomenon are helpful in understanding general duration perception, and as such, should receive more attention in future.

A relação entre o desenho da figura humana e a coordenação visomotora em crianças pré-termo aos 6 anos de idade / The relationship between human figure drawing and visual-moto coordination in 6-year-old preterm children

O presente estudo teve como objetivo examinar o desempenho, na idade pré-escolar, de crianças nascidas prematuras em testes perceptuais e visomotores. Como a prematuridade tem impacto no desenvolvimento infantil, é importante avaliar as habilidades percepto-motoras nessa população. Participaram desse estudo 30 crianças, 20 meninas e 10 meninos, com idade gestacional, ao nascimento, em torno de 34 semanas, recrutados em programa de acompamnhamento do desenvolvimento de prematuros.

The objective of this study was to examine the performance of preschool age children born prematurely in perceptual and visomotor tests. As prematurity has an impact on child's development it is important to evaluate the percepto-motor skills in this population. The participants of this study were 30 children, 20 girls and 10 boys, born with gestational age aproximadamente com 34 weeks, recruited in a developmental flow-up program for preterm infants. The children were assessed with the motor accuracy test (AYRES, 1980), the Bender Gestalt (KOPPITZ, 1989) and the versions of the human figure drawing by Wechsler (1996) and by Ayres and Reid (1966)...

Memoria de figuras com conteudo emocional em pacientes com doenca de Alzheimer / Figure memories with emotional content in patients with Alzheimer's disease

O presente trabalho consiste de um relato preliminar de um projeto de estudo sobre o processamento de estimulos visuais com conteudo emocional em pacientes com demencia do tipo Alzheimer. Foram avaliados 14 pacientes com provavel demencia de Alzheimer e 14 sujeitos controles pareados de acordo com a idade e anos de escolaridade. Foram apresentadas 16 figuras-alvo com diferentes conteudos emocionais (paisagens, pessoas mutiladas, figuras com criancas, figuras de sexo e figuras geometricas, entre outras); imediatamente apos a apresentacao das figuras foi dada uma tarefa distratora de 30 minutos, e em seguida foi feito o reconhecimento das figuras-alvo dispersas entre outras 34; de cada figura-alvo reconhecida foi solicitada a identificacao e classificacao como agradavel, desagradavel ou indiferente...