Effects of contrast polarity in paracontrast masking
The visibility of a target stimulus can be suppressed (inhibition) or increased (facilitation) during paracontrast masking. Three processes have been proposed to be involved in paracontrast masking: brief inhibition, facilitation, and prolonged inhibition (Breitmeyer et al., 2006). Brief inhibition...
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| Veröffentlicht in: | Attention, perception & psychophysics perception & psychophysics, 2009-10, Vol.71 (7), p.1576-1587 |
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| creator | Kafaligönül, Hulusi Breitmeyer, Bruno G. Öğmen, Haluk |
| description | The visibility of a target stimulus can be suppressed (inhibition) or increased (facilitation) during paracontrast masking. Three processes have been proposed to be involved in paracontrast masking: brief inhibition, facilitation, and prolonged inhibition (Breitmeyer et al., 2006). Brief inhibition is observed when the mask precedes the target at short stimulus onset asynchronies (SOAs) ranging from -10 to -30 msec, whereas prolonged inhibition is effective up to very large SOAs of -450 msec. Facilitation, enhancement in target visibility, can be observed at SOA values between -20 and -110 msec. We further investigated these processes by changing target-mask spatial separation and the contrast polarity of the mask. Our results show that (1) facilitation weakens when spatial separation between the target and mask is increased or when they have opposite contrast polarity, and (2) brief inhibition turns into facilitation for the opposite-polarity mask, whereas prolonged inhibition does not change significantly. These results suggest a fast inhibition mechanism realized in the contrast-specific center-surround antagonism of classical receptive fields for brief inhibition and a slower, higher level cortical processing that is indifferent to contrast polarity for prolonged inhibition. |
| doi_str_mv | 10.3758/APP.71.7.1576 |
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Three processes have been proposed to be involved in paracontrast masking: brief inhibition, facilitation, and prolonged inhibition (Breitmeyer et al., 2006). Brief inhibition is observed when the mask precedes the target at short stimulus onset asynchronies (SOAs) ranging from -10 to -30 msec, whereas prolonged inhibition is effective up to very large SOAs of -450 msec. Facilitation, enhancement in target visibility, can be observed at SOA values between -20 and -110 msec. We further investigated these processes by changing target-mask spatial separation and the contrast polarity of the mask. Our results show that (1) facilitation weakens when spatial separation between the target and mask is increased or when they have opposite contrast polarity, and (2) brief inhibition turns into facilitation for the opposite-polarity mask, whereas prolonged inhibition does not change significantly. 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Psychophysiology</subject><subject>Psychophysics</subject><subject>Reaction Time</subject><subject>Space Perception</subject><subject>Stimuli</subject><subject>Studies</subject><subject>Vision</subject><issn>1943-3921</issn><issn>1943-393X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpt0EtLxDAQB_AgiqurR69SBPHUOnk0j6Ms6wMEPSh4C2maSLXbrkl78Nsb2bIL4mkG5sfM8EfoDENBRSmvb56fC4ELUeBS8D10hBWjOVX0bX_bEzxDxzF-AHDKBRyiGVYSMMfiCLGl984OMet9ZvtuCCYO2bpvTWiG76zpsrUJZjtYmfjZdO8n6MCbNrrTqc7R6-3yZXGfPz7dPSxuHnPLiBhyD7QUCkrOnATHpaqoLLGhhNWUMkXBywoTIVnliFHc1BUj4Ci3tSdgJaZzdLXZuw791-jioFdNtK5tTef6MWpBGXCVjiR58Ud-9GPo0nOaACNclpQmlG-QDX2MwXm9Ds3KhG-NQf-GqVOYWmAt9G-YyZ9PS8dq5eqdntJL4HICJlrT-mA628StIwQIgJLJFRsX06h7d2H33f-XfwCrnYjz</recordid><startdate>20091001</startdate><enddate>20091001</enddate><creator>Kafaligönül, Hulusi</creator><creator>Breitmeyer, Bruno G.</creator><creator>Öğmen, Haluk</creator><general>Springer-Verlag</general><general>Springer</general><general>Springer Nature B.V</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>4T-</scope><scope>4U-</scope><scope>K9.</scope><scope>7X8</scope></search><sort><creationdate>20091001</creationdate><title>Effects of contrast polarity in paracontrast masking</title><author>Kafaligönül, Hulusi ; Breitmeyer, Bruno G. ; Öğmen, Haluk</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c427t-f035790564e80e689b3851a324d334930f8b12784be2a96adb420e36cdf20c813</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Attention</topic><topic>Behavioral Science and Psychology</topic><topic>Biological and medical sciences</topic><topic>Cognition & reasoning</topic><topic>Cognitive Psychology</topic><topic>Contrast Sensitivity</topic><topic>Discrimination (Psychology)</topic><topic>Fixation, Ocular</topic><topic>Fundamental and applied biological sciences. 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Psychophysiology</topic><topic>Psychophysics</topic><topic>Reaction Time</topic><topic>Space Perception</topic><topic>Stimuli</topic><topic>Studies</topic><topic>Vision</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kafaligönül, Hulusi</creatorcontrib><creatorcontrib>Breitmeyer, Bruno G.</creatorcontrib><creatorcontrib>Öğmen, Haluk</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>Docstoc</collection><collection>University Readers</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><jtitle>Attention, perception & psychophysics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kafaligönül, Hulusi</au><au>Breitmeyer, Bruno G.</au><au>Öğmen, Haluk</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of contrast polarity in paracontrast masking</atitle><jtitle>Attention, perception & psychophysics</jtitle><stitle>Attention, Perception, & Psychophysics</stitle><addtitle>Atten Percept Psychophys</addtitle><date>2009-10-01</date><risdate>2009</risdate><volume>71</volume><issue>7</issue><spage>1576</spage><epage>1587</epage><pages>1576-1587</pages><issn>1943-3921</issn><eissn>1943-393X</eissn><abstract>The visibility of a target stimulus can be suppressed (inhibition) or increased (facilitation) during paracontrast masking. Three processes have been proposed to be involved in paracontrast masking: brief inhibition, facilitation, and prolonged inhibition (Breitmeyer et al., 2006). Brief inhibition is observed when the mask precedes the target at short stimulus onset asynchronies (SOAs) ranging from -10 to -30 msec, whereas prolonged inhibition is effective up to very large SOAs of -450 msec. Facilitation, enhancement in target visibility, can be observed at SOA values between -20 and -110 msec. We further investigated these processes by changing target-mask spatial separation and the contrast polarity of the mask. Our results show that (1) facilitation weakens when spatial separation between the target and mask is increased or when they have opposite contrast polarity, and (2) brief inhibition turns into facilitation for the opposite-polarity mask, whereas prolonged inhibition does not change significantly. 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| subjects | Attention Behavioral Science and Psychology Biological and medical sciences Cognition & reasoning Cognitive Psychology Contrast Sensitivity Discrimination (Psychology) Fixation, Ocular Fundamental and applied biological sciences. Psychology Humans Inhibition Judgment Orientation Pattern Recognition, Visual Perception Perceptual Masking Psychology Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychophysics Reaction Time Space Perception Stimuli Studies Vision |
| title | Effects of contrast polarity in paracontrast masking |
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