Perception of direction of visual motion. I. Influence of angular body acceleration and tilt
We investigated, psychophysically, the influence of body rotation on visual motion direction thresholds for both upright sitting and tilted observers. Four angular accelerations (0, 20, 40 and 60°/s 2) were combined with 3 concurrent backward-tilt positions (0, 45 and 90°). This led to combined stim...
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| Veröffentlicht in: | Behavioural brain research 1996-11, Vol.81 (1), p.141-146 |
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| creator | Loose, R. Probst, Th Wist, E.R. |
| description | We investigated, psychophysically, the influence of body rotation on visual motion direction thresholds for both upright sitting and tilted observers. Four angular accelerations (0, 20, 40 and 60°/s
2) were combined with 3 concurrent backward-tilt positions (0, 45 and 90°). This led to combined stimulation of the semicircular canals and otoliths. Vestibular stimulation was combined with a visual motion stimulus. Random-dot kinematograms in which varying percentages of pixels coherently moving to the left were presented upon a background of otherwise randomly moving pixels (random walk). The smallest percentage of coherently moving pixels leading to a clear perception of motion direction represented as the perceptual threshold. Angular accelerations about the longitudinal body axis significantly increased motion-direction thresholds. Concurrent backward tilt did not influence thresholds. These results differ from those of studies in which translational linear acceleration was employed. Our results support the view that it is necessary to distinguish between linear acceleration caused by gravitational forces and that caused by additional linear accelerations about the
x-, y-, and
z-axes. |
| doi_str_mv | 10.1016/S0166-4328(96)00053-8 |
| format | Article |
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x-, y-, and
z-axes.</description><subject>Acceleration - adverse effects</subject><subject>Adolescent</subject><subject>Adult</subject><subject>Behavioral psychophysiology</subject><subject>Biological and medical sciences</subject><subject>Body acceleration</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Male</subject><subject>Miscellaneous</subject><subject>Motion Perception - physiology</subject><subject>Otolithic Membrane - physiology</subject><subject>Perception of direction</subject><subject>Photic Stimulation</subject><subject>Physical Stimulation</subject><subject>Posture - physiology</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. Psychophysiology</subject><subject>Semicircular Canals - physiology</subject><subject>Space life sciences</subject><subject>Space Perception - physiology</subject><subject>Tilt</subject><subject>Vestibule, Labyrinth - physiology</subject><subject>Visual motion</subject><issn>0166-4328</issn><issn>1872-7549</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkV1LwzAUhoMoc05_wqAXInrRmaRJml6JDD8GAwX1Tghn-ZBI186kHezf225zt0JISM7zJocnCI0JnhBMxO1bN4mUZVReF-IGY8yzVB6hIZE5TXPOimM0PCCn6CzG7w5imJMBGsiCY0zwEH2-2qDtqvF1ldQuMT5Y_bdZ-9hCmSzr_mCSzLpRubK1lbZ9GaqvtoSQLGqzSUBrW9oA2yxUJml82ZyjEwdltBf7dYQ-Hh_ep8_p_OVpNr2fpzrLeJMuKKOCCQnEUSuoAJYTzoDgzFC9wNJYmRGQnDoinXOFBMqd0I4Yw40QJBuhq929q1D_tDY2aulj108Jla3bqHLJC5wz9i9IuOw6ErID-Q7UoY4xWKdWwS8hbBTBqtevtvpV71YVQm31qz433j_QLpbWHFJ73139cl-HqKF0ASrt4wGjTGKZ9djdDrOdtbW3QUXte--7_1Gm9v808gsgsqCA</recordid><startdate>199611</startdate><enddate>199611</enddate><creator>Loose, R.</creator><creator>Probst, Th</creator><creator>Wist, E.R.</creator><general>Elsevier B.V</general><general>Elsevier Science</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TK</scope><scope>7X8</scope></search><sort><creationdate>199611</creationdate><title>Perception of direction of visual motion. I. Influence of angular body acceleration and tilt</title><author>Loose, R. ; Probst, Th ; Wist, E.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c335t-b2426468a1f2e626a47154a103d2cb08de831a852f18fff98a25f6cf1dd5d6613</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Acceleration - adverse effects</topic><topic>Adolescent</topic><topic>Adult</topic><topic>Behavioral psychophysiology</topic><topic>Biological and medical sciences</topic><topic>Body acceleration</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Humans</topic><topic>Male</topic><topic>Miscellaneous</topic><topic>Motion Perception - physiology</topic><topic>Otolithic Membrane - physiology</topic><topic>Perception of direction</topic><topic>Photic Stimulation</topic><topic>Physical Stimulation</topic><topic>Posture - physiology</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Semicircular Canals - physiology</topic><topic>Space life sciences</topic><topic>Space Perception - physiology</topic><topic>Tilt</topic><topic>Vestibule, Labyrinth - physiology</topic><topic>Visual motion</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Loose, R.</creatorcontrib><creatorcontrib>Probst, Th</creatorcontrib><creatorcontrib>Wist, E.R.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Neurosciences Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Behavioural brain research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Loose, R.</au><au>Probst, Th</au><au>Wist, E.R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Perception of direction of visual motion. I. Influence of angular body acceleration and tilt</atitle><jtitle>Behavioural brain research</jtitle><addtitle>Behav Brain Res</addtitle><date>1996-11</date><risdate>1996</risdate><volume>81</volume><issue>1</issue><spage>141</spage><epage>146</epage><pages>141-146</pages><issn>0166-4328</issn><eissn>1872-7549</eissn><coden>BBREDI</coden><abstract>We investigated, psychophysically, the influence of body rotation on visual motion direction thresholds for both upright sitting and tilted observers. Four angular accelerations (0, 20, 40 and 60°/s
2) were combined with 3 concurrent backward-tilt positions (0, 45 and 90°). This led to combined stimulation of the semicircular canals and otoliths. Vestibular stimulation was combined with a visual motion stimulus. Random-dot kinematograms in which varying percentages of pixels coherently moving to the left were presented upon a background of otherwise randomly moving pixels (random walk). The smallest percentage of coherently moving pixels leading to a clear perception of motion direction represented as the perceptual threshold. Angular accelerations about the longitudinal body axis significantly increased motion-direction thresholds. Concurrent backward tilt did not influence thresholds. These results differ from those of studies in which translational linear acceleration was employed. Our results support the view that it is necessary to distinguish between linear acceleration caused by gravitational forces and that caused by additional linear accelerations about the
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| ispartof | Behavioural brain research, 1996-11, Vol.81 (1), p.141-146 |
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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Acceleration - adverse effects Adolescent Adult Behavioral psychophysiology Biological and medical sciences Body acceleration Female Fundamental and applied biological sciences. Psychology Humans Male Miscellaneous Motion Perception - physiology Otolithic Membrane - physiology Perception of direction Photic Stimulation Physical Stimulation Posture - physiology Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Semicircular Canals - physiology Space life sciences Space Perception - physiology Tilt Vestibule, Labyrinth - physiology Visual motion |
| title | Perception of direction of visual motion. I. Influence of angular body acceleration and tilt |
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