Macaque monkeys show reversed ocular following responses to two-frame-motion stimulus presented with inter-stimulus intervals.

Journal of Computational Neuroscience
Aya TakemuraKenichiro Miura

Abstract

When two-frame apparent motion stimuli are presented with an appropriate inter-stimulus interval (ISI), motion is perceived in the direction opposite to the actual image shift. Herein, we measured a simple eye movement, ocular following responses (OFRs), in macaque monkeys to examine the ISI reversal effect on oculomotor. Two-frame movies with an ISI induced reversed OFRs. Without ISI, the OFRs to the two-frame movie were induced in the direction of the stimulus shift. However, with ISIs ≥10 ms, OFRs in the direction opposite to the phase shift were observed. This directional reversal persisted for ISIs up to 160 ms; for longer ISIs virtually no ocular response was observed. Furthermore, longer exposure to the initial image (Motion onset delay: MOD) reduced OFRs. We show that these dependences on ISIs/MODs can be explained by the motion energy model. Furthermore, we examined the dependence on ISI reversal using various spatial frequencies. To account for our findings, the optimal frequency of the temporal filters of the energy model must decrease between 0.5 and 1 cycles/°, suggesting that there are at least two channels with different temporal characteristics. These results are consistent with those from humans, suggesting tha...Continue Reading

References

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Apr 19, 2002·Annals of the New York Academy of Sciences·Aya TakemuraKenji Kawano
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Dec 17, 2005·Vision Research·Kenichiro MiuraFrederick A Miles
Jan 20, 2007·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Aya TakemuraF A Miles
Feb 7, 2014·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Kenichiro MiuraKenji Kawano
Jun 27, 2019·Progress in Brain Research·Kenichiro MiuraKenji Kawano
Feb 7, 2020·The European Journal of Neuroscience·Yuko SugitaTakahisa Furukawa

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