Visual Motion Aftereffect Induced by Simulated Rectilinear Motion

Perception ◽  
1977 ◽  
Vol 6 (6) ◽  
pp. 711-718 ◽  
Author(s):  
Gordon G Denton
Keyword(s):  
Visual Motion ◽  
Motion Aftereffect ◽  
Rectilinear Motion ◽  
Test Field ◽  
Time Duration ◽  
Recovery Function

Visual motion aftereffect characteristics comparable to those associated with rotary and translatory movement of a test field are demonstrated for simulated rectilinear motion of the observer. The intensity and time duration of the phenomenon are shown to be positively correlated. The implications of this for individual observers are considered. The results of this experiment are correlated with those for adaptation and for recovery from adaptation that were obtained from the same group of observers. The findings are shown to support the hypothesis that visual motion aftereffect is a manifestation of the adaptation recovery function of velocity sensitive mechanisms.

Strength of Motion Aftereffect Varies with Segregation of Test Field and Surround

Perception ◽  
1996 ◽  
Vol 25 (1_suppl) ◽  
pp. 64-64 ◽  
Author(s):  
J P Harris ◽  
D Sullivan
Keyword(s):  
Visual Motion ◽  
Test Pattern ◽  
Motion Aftereffect ◽  
Auditory Signal ◽  
Test Field ◽  
Rectangular Window ◽  
Stationary Test ◽  
Two Measures ◽  
Motion Detectors ◽  
Good Agreement

It is widely accepted that the motion aftereffect (MAE) results from the adaptation of visual motion detectors. However, recent work suggests that how the effects of that adaptation are expressed (the nature of the perceived MAE) depends on the nature of the inducing and test fields. We investigated how the strength of the MAE varied with the nature of the boundary between the test field and the surround. The surround (18.5 deg wide × 13.5 deg high) to the adapting and test fields was an area of vertical square-wave grating of 0.7 cycle deg−1. During adaptation, vertical stripes of the same spatial frequency as the background moved horizontally at a speed of 2 deg s−1 for 14 s within a central rectangular window of 9.7 deg wide × 7.6 deg high. At the end of adaptation, one of six different test fields was presented in the central window. In three of these, the stationary test stripes were exactly aligned with the surrounding stripes, and in the other three they were offset by half a stripe width. For two of these conditions (one aligned, one offset), a black outline was drawn around the edge of the adapting window (and so was visible only where it crossed white areas), and for two others (one aligned, one offset) the outline was red, and so visible in its entirety. The strength of MAEs in twelve subjects was assessed both by ratings at an auditory signal which occurred 0.5 s after the end of adaptation and also by measurement of their durations. There was good agreement between these two measures. MAEs were significantly stronger on the offset than on the aligned test fields. The presence of an outline increased MAE strength compared with no outline, but these outline effects were much weaker than those of offsetting the test stripes from the surround. We suggest that the MAE depends in part on the presence of a visually separable test pattern to which motion may be allocated.

scholarly journals Mental Rotation Meets the Motion Aftereffect: The Role of hV5/MT+ in Visual Mental Imagery

2011 ◽  
Vol 23 (6) ◽  
pp. 1395-1404 ◽  
Author(s):  
Ruth Seurinck ◽  
Floris P. de Lange ◽  
Erik Achten ◽  
Guy Vingerhoets
Keyword(s):  
Mental Rotation ◽  
Mental Imagery ◽  
Parietal Cortex ◽  
Neural Activity ◽  
Posterior Parietal Cortex ◽  
Visual Motion ◽  
Motion Aftereffect ◽  
Mental Rotation Task ◽  
Behavioral Performance ◽  
Visual Mental Imagery

A growing number of studies show that visual mental imagery recruits the same brain areas as visual perception. Although the necessity of hV5/MT+ for motion perception has been revealed by means of TMS, its relevance for motion imagery remains unclear. We induced a direction-selective adaptation in hV5/MT+ by means of an MAE while subjects performed a mental rotation task that elicits imagined motion. We concurrently measured behavioral performance and neural activity with fMRI, enabling us to directly assess the effect of a perturbation of hV5/MT+ on other cortical areas involved in the mental rotation task. The activity in hV5/MT+ increased as more mental rotation was required, and the perturbation of hV5/MT+ affected behavioral performance as well as the neural activity in this area. Moreover, several regions in the posterior parietal cortex were also affected by this perturbation. Our results show that hV5/MT+ is required for imagined visual motion and engages in an interaction with parietal cortex during this cognitive process.

scholarly journals Sound Frequency and Aural Selectivity in Sound-Contingent Visual Motion Aftereffect

PLoS ONE ◽  
2012 ◽  
Vol 7 (5) ◽  
pp. e36803 ◽  
Author(s):  
Maori Kobayashi ◽  
Wataru Teramoto ◽  
Souta Hidaka ◽  
Yoichi Sugita
Keyword(s):  
Visual Motion ◽  
Motion Aftereffect ◽  
Sound Frequency

Evoked Magnetic Field Elicited by Motion and Motion Aftereffect

Perception ◽  
1996 ◽  
Vol 25 (1_suppl) ◽  
pp. 113-113
Author(s):  
N Osaka ◽  
H Ashida ◽  
M Osaka ◽  
S Koyama ◽  
R Kakigi
Keyword(s):  
Magnetic Field ◽  
Spatial Frequency ◽  
Human Subject ◽  
Visual Motion ◽  
Motion Aftereffect ◽  
Sinusoidal Grating ◽  
Negative Aftereffect ◽  
Motion Condition ◽  
Clear Increase ◽  
Good Agreement

Motion aftereffect (MAE) is a negative aftereffect caused by prolonged viewing of visual motion: after gazing at a moving grating for a while, a stationary image will appear to move in the opposite direction (Ashida and Osaka, 1995 Vision Research35 1825). Evoked magnetic field (magnetoencephalogram: MEG) was measured on a human subject observing visual motion and MAE. Magnetic evoked field (80 averagings) was measured from 37 points over occipital and parietal areas (Magnes SQUID biomagnetometer, BTi) during watching a horizontally moving sinusoidal grating with low spatial frequency (2 cycles deg−1 with 5 Hz: motion condition) and immediately after stopping the moving grating (MAE condition). Dipole estimates based on equal magnetic field contour suggest that the main loci subserving visual motion and MAE appear to be the surrounding region over occipital and parietal areas in the human brain. Further analysis is now underway. In general, this appears to be in good agreement with another study using fMRI-based MAE measures [Tootell et al, 1995 Nature (London)375 139] in which a clear increase in activity in these areas was observed when subjects viewed MAE.

scholarly journals Auditory Motion Elicits a Visual Motion Aftereffect

2016 ◽  
Vol 10 ◽  
Author(s):  
Christopher C. Berger ◽  
H. Henrik Ehrsson
Keyword(s):  
Visual Motion ◽  
Motion Aftereffect ◽  
Auditory Motion

Eye movements cannot explain vibration-induced visual motion and motion aftereffect

2006 ◽  
Vol 173 (1) ◽  
pp. 141-152 ◽  
Author(s):  
Tatjana Seizova-Cajic ◽  
W. L. Ben Sachtler ◽  
Ian S. Curthoys
Keyword(s):  
Eye Movements ◽  
Visual Motion ◽  
Motion Aftereffect

scholarly journals Discontinuity of seen motion reduces the visual motion aftereffect

1972 ◽  
Vol 12 (1) ◽  
pp. 69-72 ◽  
Author(s):  
William P. Banks ◽  
Dan A. Kane
Keyword(s):  
Visual Motion ◽  
Motion Aftereffect

Measurement of a Visual Motion Aftereffect in the Rhesus Monkey

Science ◽  
1963 ◽  
Vol 140 (3562) ◽  
pp. 57-59 ◽  
Author(s):  
T. R. Scott ◽  
D. A. Powell
Keyword(s):  
Rhesus Monkey ◽  
Visual Motion ◽  
Motion Aftereffect
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