The role of expectancy and volition in smooth pursuit eye movements.
Prog Brain Res
; 140: 239-54, 2002.
Article
em En
| MEDLINE
| ID: mdl-12508594
ABSTRACT
The most important factor allowing the generation of pursuit eye movements prior to target onset is confidence in the likelihood of imminent target appearance. We show how these anticipatory pursuit responses are essentially ballistic motor primitives and how the signal that drives them in normally defined by stored information concerning target speed, duration and direction. But we also show how static cues may be used to grade the level of these motor primitives 'on-line'. We further demonstrate that, when concatenated, these graded motor primitives can be rapidly combined to form predictive smooth movement trajectories in response to complex multi-ramp sequences.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Acompanhamento Ocular Uniforme
/
Movimentos Oculares
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article