scholarly journals MIB as an adaptation phenomenon: evidence from the motion aftereffect

2013 ◽  
Vol 13 (9) ◽  
pp. 380-380
Author(s):  
E. Wells ◽  
A. Leber
Keyword(s):  
Motion Aftereffect ◽  
Adaptation Phenomenon

PATHS OF SEEN MOTION AND MOTION AFTEREFFECT

1966 ◽  
Vol 23 (3) ◽  
pp. 1003-1008 ◽  
Author(s):  
SHIGEMASA SUMI
Keyword(s):  
Motion Aftereffect

scholarly journals Through the Neural Magnifying Glass: Visual Acuity and Motion-Aftereffect

i-Perception ◽  
10.1068/ii48 ◽  
2014 ◽  
Vol 5 (5) ◽  
pp. 479-479
Author(s):  
S.C Boyle ◽  
R Jenkins ◽  
M Lages
Keyword(s):  
Visual Acuity ◽  
Motion Aftereffect

Apparent Velocity of Motion Aftereffects in Central and Peripheral Vision

Perception ◽  
1986 ◽  
Vol 15 (5) ◽  
pp. 603-612 ◽  
Author(s):  
Michael J Wright
Keyword(s):  
Visual Field ◽  
Time Course ◽  
Peripheral Vision ◽  
Temporal Frequency ◽  
Motion Aftereffect ◽  
Apparent Velocity ◽  
Real Motion ◽  
Temporal Decay ◽  
Spatial Grain ◽  
Motion Aftereffects

Adapting to a drifting grating (temporal frequency 4 Hz, contrast 0.4) in the periphery gave rise to a motion aftereffect (MAE) when the grating was stopped. A standard unadapted foveal grating was matched to the apparent velocity of the MAE, and the matching velocity was approximately constant regardless of the visual field position and spatial frequency of the adapting grating. On the other hand, when the MAE was measured by nulling with real motion of the test grating, nulling velocity was found to increase with eccentricity. The nulling velocity was constant when scaled to compensate for changes in the spatial ‘grain’ of the visual field. Thus apparent velocity of MAE is constant across the visual field, but requires a greater velocity of real motion to cancel it in the periphery. This confirms that the mechanism underlying MAE is spatially-scaled with eccentricity, but temporally homogeneous. A further indication of temporal homogeneity is that when MAE is tracked, by matching or by nulling, the time course of temporal decay of the aftereffect is similar for central and for peripheral stimuli.

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.

Recovery from Adaptation to Moving Gratings

Perception ◽  
1977 ◽  
Vol 6 (6) ◽  
pp. 719-725 ◽  
Author(s):  
Max J Keck ◽  
Benjamin Pentz
Keyword(s):  
Time Course ◽  
Spontaneous Recovery ◽  
Motion Aftereffect ◽  
Time Decay ◽  
Short Term ◽  
Test Grating ◽  
Test Conditions ◽  
Sinusoidal Gratings ◽  
Short Term Adaptation

Short-term adaptation to moving sinusoidal gratings results in a motion aftereffect which decays in time. The time decay of the motion aftereffect has been measured psychophysically, and it is found to depend on (i) the spontaneous recovery from the adapted state, and (ii) the contrast of the test grating. We have measured the decays for various test conditions. An extrapolation of the measurements allows us to obtain a decay which represents the time course of the spontaneous recovery of the direction-sensitive mechanisms.

Spatial frequency selective mechanisms underlying the motion aftereffect

1992 ◽  
Vol 32 (3) ◽  
pp. 561-568 ◽  
Author(s):  
E. Leslie Cameron ◽  
Curtis L. Baker ◽  
Jane C. Boulton
Keyword(s):  
Spatial Frequency ◽  
Motion Aftereffect ◽  
Frequency Selective

Properties of the stereoscopic (Cyclopean) motion aftereffect

1994 ◽  
Vol 34 (9) ◽  
pp. 1139-1147 ◽  
Author(s):  
Robert Patterson ◽  
Christopher Bowd ◽  
Ray Phinney ◽  
Robert Pohndorf ◽  
Wanda J. Barton-Howard ◽  
...  
Keyword(s):  
Motion Aftereffect

On the Ancient History of the Direction of the Motion Aftereffect

Perception ◽  
1996 ◽  
Vol 25 (10) ◽  
pp. 1177-1187 ◽  
Author(s):  
Frans A J Verstraten
Keyword(s):  
Visual Illusion ◽  
Motion Aftereffect ◽  
First Person ◽  
Ancient History ◽  
De Rerum Natura ◽  
History Of ◽  
Correct Direction

Scientists agree that Aristotle in his Parva Naturalia was the first to report a visual illusion known as the motion aftereffect (MAE). But there is less consensus as to who was the first to report the direction of the MAE. According to some, Aristotle only described the phenomenon without saying anything about its direction. Others have defended the position that Aristotle did report a direction, but the wrong one. Therefore, it has been suggested that Lucretius in his poem De Rerum Natura was the first to report the correct direction of the MAE. In this paper it is shown why and how it can be inferred that Aristotle did not write about the direction of the MAE, only about its occurrence. It is also argued that it is indeed likely that Lucretius was the first person to report the direction of the MAE. However, this is not as obvious as it might appear at first sight.

Frequency of Stuttering Following Repeated Unison Readings

1971 ◽  
Vol 14 (3) ◽  
pp. 519-524 ◽  
Author(s):  
Art Frank ◽  
Oliver Bloodstein
Keyword(s):  
Oral Reading ◽  
Adaptation Effect ◽  
Motor Plan ◽  
Almost All ◽  
Adaptation Phenomenon

The purpose of this study was to determine whether the decrease in stuttering which usually accompanies repeated oral readings of a passage (adaptation effect) requires the occurrence of stuttering, as is implied by almost all theories which have been advanced to explain the effect. Fifteen stutterers performed five relatively fluent readings of a 200-word passage in unison with an experimenter and a sixth reading independently. The amount of stuttering in the sixth reading was found to be essentially the same as in the sixth reading of an ordinary adaptation series by the same subjects. The inference was drawn that the adaptation effect is primarily adaptation to oral reading as such rather than to stuttering. It was suggested that the adaptation phenomenon results from rehearsal of the motor plan.

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