scholarly journals Illusory Motion Perception Is Associated with Contrast Discrimination but Not Motion Sensitivity, Self-Reported Visual Discomfort, or Migraine Status

2020 ◽  
Vol 61 (8) ◽  
pp. 43
Author(s):  
Chongyue He ◽  
Bao Ngoc Nguyen ◽  
Yu Man Chan ◽  
Allison Maree McKendrick
Keyword(s):  
Motion Perception ◽  
Illusory Motion ◽  
Visual Discomfort ◽  
Motion Sensitivity ◽  
Contrast Discrimination

Can Illusory Motion Disrupt Tracking Real Motion?

Perception ◽  
1997 ◽  
Vol 26 (3) ◽  
pp. 269-275 ◽  
Author(s):  
Timothy J Andrews ◽  
Allison N McCoy
Keyword(s):  
Motion Perception ◽  
Retinal Image ◽  
Optokinetic Nystagmus ◽  
Neural Representation ◽  
Illusory Motion ◽  
Brain Areas ◽  
Critical Rate ◽  
Real Motion ◽  
Actual Motion ◽  
Perceived Motion

When rotating stripes or other periodic stimuli cross the retina at a critical rate, a reversal in the direction of motion of the stimuli is often seen. This illusion of motion perception was used to explore the roles of retinal and perceived motion in the generation of optokinetic nystagmus. Here we show that optokinetic nystagmus is disrupted during the perception of this illusion. Thus, when perceived and actual motion are in conflict, subjects fail to track the veridical movement. This observation suggests that the perception of motion can directly influence optokinetic nystagmus, even in the presence of a moving retinal image. A conflict in the neural representation of motion in different brain areas may explain these findings.

scholarly journals Halt and recovery of illusory motion perception from peripherally viewed static images

2011 ◽  
Vol 73 (6) ◽  
pp. 1823-1832 ◽  
Author(s):  
Erika Tomimatsu ◽  
Hiroyuki Ito ◽  
Shoji Sunaga ◽  
Gerard B. Remijn
Keyword(s):  
Motion Perception ◽  
Illusory Motion ◽  
Static Images

Topography of evoked potentials associated with illusory motion perception as a motion aftereffect

2002 ◽  
Vol 13 (1) ◽  
pp. 75-84 ◽  
Author(s):  
Yuji Kobayashi ◽  
Aihide Yoshino ◽  
Tsuneyuki Ogasawara ◽  
Soichiro Nomura
Keyword(s):  
Evoked Potentials ◽  
Motion Perception ◽  
Motion Aftereffect ◽  
Illusory Motion

scholarly journals Normal development of pattern motion sensitivity in macaque monkeys

2008 ◽  
Vol 25 (5-6) ◽  
pp. 675-684 ◽  
Author(s):  
CYNTHIA HALL-HARO ◽  
LYNNE KIORPES
Keyword(s):  
Motion Perception ◽  
Discrimination Performance ◽  
Macaca Nemestrina ◽  
Global Motion ◽  
Complex Motion ◽  
Motion Sensitivity ◽  
Macaque Monkeys ◽  
Discrimination Ability ◽  
Pattern Motion ◽  
Neurophysiological Data

AbstractWe studied the development of sensitivity to complex motion using plaid patterns. We hypothesized, based on neurophysiological data showing a dearth of pattern direction–selective (PDS) cells in area medial temporal (MT) of infant macaques, that sensitivity to pattern motion would develop later than other forms of global motion sensitivity. We tested 10 macaque monkeys (Macaca nemestrina) ranging in age from 7 weeks to 109–160 weeks (adult). The monkeys discriminated horizontal from vertical pattern motion; sensitivity for one-dimensional (1D) direction discrimination and detection were tested as control tasks. The results show that pattern motion discrimination ability develops relatively late, between 10 and 18 weeks, while performance on the 1D control tasks was excellent at the earliest test ages. Plaid discrimination performance depends on both the speed and spatial scale of the underlying patterns. However, development is not limited by contrast sensitivity. These results support the idea that pattern motion perception depends on a different mechanism than other forms of global motion perception and are consistent with the idea that the representation of PDS neurons in MT may limit the development of complex motion perception.

scholarly journals Neural correlates of illusory motion perception in Drosophila

2011 ◽  
Vol 108 (23) ◽  
pp. 9685-9690 ◽  
Author(s):  
J. C. Tuthill ◽  
M. E. Chiappe ◽  
M. B. Reiser
Keyword(s):  
Motion Perception ◽  
Neural Correlates ◽  
Illusory Motion

scholarly journals Larger Receptive Field Size as a Mechanism Underlying Atypical Motion Perception in Autism Spectrum Disorder

2017 ◽  
Vol 5 (5) ◽  
pp. 827-842 ◽  
Author(s):  
Kimberly B. Schauder ◽  
Woon Ju Park ◽  
Duje Tadin ◽  
Loisa Bennetto
Keyword(s):  
Autism Spectrum Disorder ◽  
Receptive Field ◽  
Motion Perception ◽  
Visual Motion ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Field Size ◽  
Contrast Model ◽  
Motion Sensitivity ◽  
Receptive Field Size

Atypical visual motion perception has been widely observed in individuals with autism spectrum disorder (ASD). The pattern of results, however, has been inconsistent. Emerging mechanistic hypotheses seek to explain these variable patterns of atypical motion sensitivity, each uniquely predicting specific patterns of performance across varying stimulus conditions. Here, we investigated the integrity of two such fundamental mechanisms—response gain control and receptive field size. A total of 20 children and adolescents with ASD and 20 typically developing (TD) age- and IQ-matched controls performed a motion discrimination task. To adequately model group differences in both mechanisms of interest, we tested a range of 23 stimulus conditions varying in size and contrast. Results revealed a motion perception impairment in ASD that was specific to the smallest sized stimuli (1°), irrespective of stimulus contrast. Model analyses provided evidence for larger receptive field size in ASD as the mechanism that explains this size-specific reduction of motion sensitivity.

scholarly journals M192. SENSITIVITY FOR MOTION IS WEAKENED IN FIRST EPISODE PSYCHOSIS

2020 ◽  
Vol 46 (Supplement_1) ◽  
pp. S209-S209
Author(s):  
Francina Badia ◽  
Daniel Linares ◽  
Albert Compte ◽  
Mireia Rosa ◽  
Josep Dalmau ◽  
...  
Keyword(s):  
Motion Perception ◽  
Response To Treatment ◽  
Psychotic Symptoms ◽  
First Episode ◽  
Psychotic Episode ◽  
Antipsychotic Treatment ◽  
Healthy Controls ◽  
Exclusion Criteria ◽  
Motion Sensitivity ◽  
First Psychotic Episode

Abstract Background Perceptual spatial suppression is a phenomenon in which the perceived strength of a stimulus in space is reduced when the stimulus is surrounded by other stimuli. For motion perception, two studies so far have suggested that spatial suppression and sensitivity to motion perception is also reduced in patients with schizophrenia. Studies to date have been conducted in patients with chronic schizophrenia, however, whether these abnormalities are present at the onset of the disorder or whether they emerge during the course of the illness has not been examined, and no study has assessed whether these abnormalities are specific to schizophrenia or whether they are present in other psychotic disorders. Furthermore, if reduced spatial suppression and sensitivity for motion in schizophrenia are related to a glutamatergic hypofunction, as suggested by a recent study (Schallmo et al., 2019), these reductions may be more accentuated in patients who fail to respond to first-line antipsychotic treatment. Methods Sample: 33 patients with a first psychotic episode (16 females, age=16.4±0.6) and 17 healthy controls (9 females, age=17.2±0.61). Exclusion criteria for both groups were: intellectual disability according to DSM-V criteria. For healthy controls, exclusion criteria also included having a first degree relative with a history of psychotic disorder, current or past diagnosis of psychiatrics disorders. Instruments: The perceptual test was performed on a tablet, and consisted of a briefly presented grating (small or large) drifted sideways (the direction was chosen at random with equal probability), in which the participant was instructed to report the perceived direction. Clinical assessment at illness onset and 12 week follow-up: Positive and Negative Symptom Scales (PANSS), Kiddie Schedule for Affective Disorders and Schizophrenia, Present and Lifetime version and Structured Clinical Interview for DSM-IV. Non-response to treatment was defined as lack of 50% reduction in PANSS positive or negative scores at 12 weeks, any change in antipsychotics or need for combinations due to lack of clinical response. Psychophysical analysis: Motion sensitivity was estimated independently of lapses of attention, which were assessed by including trials in which the motion stimulus was easily discriminated. Results Patients and healthy controls were homogeneous in age (t=-.720, p=,537) and sex (X2=0.38, p=0.542). In patients, mean treatment response rates was 56.5%. Patients had similar scores of positive and negative symptomatology (positive symptoms= 21±7,13; negative symptoms= 18,4±8,18; general symptoms= 40,7±13,07). At 12 weeks 43,8% had a diagnosis of affective psychosis (bipolar disorder, depressive disorder with psychotic symptoms). Patients with a first psychotic episode, regardless of diagnosis or response to treatment, had less motion sensitivity than healthy controls (f=6.397, p=0.0148). No significant differences were found between groups in surround suppression and no significant correlations were observed between spatial suppression and clinical symptoms. Discussion To our knowledge, this is the first study to find abnormal motion sensitivity in patients with a first episode of psychosis. Our measure of sensitivity, given that it was not contaminated by lapses, indicates that patients had a genuine motion perception deficit rather than an inability to focus on the task. Our results also suggest that motion sensitivity may not be specific to patients with schizophrenia but may also characterize affective psychoses. Larger studies may be needed to clarify whether there is a relationship between motion sensitivity and severity of symptoms and response to treatment.

Changing Pitch of Sounds Alters Perceived Visual Motion Trajectory

2013 ◽  
Vol 26 (4) ◽  
pp. 317-332 ◽  
Author(s):  
Yasuhiro Takeshima ◽  
Jiro Gyoba
Keyword(s):  
Visual Field ◽  
Visual Perception ◽  
Motion Perception ◽  
Visual Motion ◽  
Auditory Stimuli ◽  
Motion Trajectory ◽  
Illusory Motion ◽  
Central Visual Field ◽  
Visual Motion Perception ◽  
Visual Inputs

Several studies have examined the effects of auditory stimuli on visual perception. In studies of cross-modal correspondences, auditory pitch has been shown to modulate visual motion perception. In particular, low-reliability visual motion stimuli tend to be affected by metaphorically or physically congruent or incongruent sounds. In the present study, we examined the modulatory effects of auditory pitch on visual perception of motion trajectory for visual inputs of varying reliability. Our results indicated that an auditory pitch implying the illusory motion toward the outside of the visual field-modulated perceived motion trajectory. In contrast, auditory pitch implying the illusory motion toward the central visual field did not affect the perception of motion trajectory. This asymmetrical effect of auditory stimuli occurred depending on the reliability of the visual input. Moreover, sounds that corresponded in terms of their pitch-elevation mapping altered the perception of the trajectory of visual motion when apparent motion could be perceived smoothly. Therefore, the present results demonstrate that auditory stimuli modulate visual motion perception especially when smooth motion is perceived in the peripheral visual field.

scholarly journals Investigating Head Movements Induced by ‘Riloid’ Patterns in Migraine and Control Groups Using a Virtual Reality Display

2018 ◽  
Vol 31 (8) ◽  
pp. 753-777
Author(s):  
Louise O’Hare ◽  
Alex Sharp ◽  
Patrick Dickinson ◽  
Graham Richardson ◽  
John Shearer
Keyword(s):  
Virtual Reality ◽  
Visual System ◽  
Visual Stimulus ◽  
Vestibular System ◽  
Visual Display ◽  
Head Movements ◽  
Illusory Motion ◽  
Control Groups ◽  
Visual Discomfort ◽  
And Control

Abstract Certain striped patterns can induce illusory motion, such as those used in op-art. The visual system and the vestibular system work together closely, and so it is possible that illusory motion from a visual stimulus can result in uncertainty in the vestibular system. This increased uncertainty may be measureable in terms of the magnitude of head movements. Head movements were measured using a head-mounted visual display. Results showed that stimuli associated with illusory motion also seem to induce greater head movements when compared to similar stimuli. Individuals with migraine are more susceptible to visual discomfort, and this includes illusory motion from striped stimuli. However, there was no evidence of increased effect of illusory motion on those with migraine compared to those without, suggesting that while motion illusions may affect discomfort judgements, this is not limited to only those with migraine.

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