Michelson contrast, RMS contrast and energy of various spatial stimuli at threshold
Contrast sensitivity was measured as a function of median spatial frequency for vertical cosine gratings, narrow-band noise stimuli, and spots with luminance increment or decrement. Contrast sensitivity was expressed in terms of Michelson contrast, RMS contrast, and contrast energy in order to demon...
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| Veröffentlicht in: | Vision research (Oxford) 1993-07, Vol.33 (10), p.1431-1436 |
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| container_title | Vision research (Oxford) |
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| creator | Kukkonen, Heljä Rovamo, Jyrki Tiippana, Kaisa Näsänen, Risto |
| description | Contrast sensitivity was measured as a function of median spatial frequency for vertical cosine gratings, narrow-band noise stimuli, and spots with luminance increment or decrement. Contrast sensitivity was expressed in terms of Michelson contrast, RMS contrast, and contrast energy in order to demonstrate the characteristics of various contrast measures. Gratings and noise stimuli had either constant stimulus area or constant number of cycles. Michelson contrast sensitivity was better for gratings than for noise stimuli or spots, whereas RMS contrast sensitivity was almost equal for gratings and noise stimuli but lowest for spots. Contrast energy sensitivity takes into account the stimulus area and was therefore best for spots. |
| doi_str_mv | 10.1016/0042-6989(93)90049-3 |
| format | Article |
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Psychoanalysis. Psychiatry</subject><subject>Psychology. Psychophysiology</subject><subject>Psychophysics</subject><subject>RMS contrast</subject><subject>Sensory Thresholds - physiology</subject><subject>Spots</subject><subject>Vision</subject><subject>Vision Tests - instrumentation</subject><subject>Vision Tests - methods</subject><issn>0042-6989</issn><issn>1878-5646</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkd1rFDEQwIMo9Vr9DxTyIFLB1WSTzcdLQUr9gBbB6nOYTma9yN7uNckd9L_vnnfcoz4Nw_xmmPkNY6-k-CCFNB-F0G1jvPPnXr3zc-Yb9YQtpLOu6Yw2T9niiDxnp6X8EULYrvUn7MQppaTRC3Z7k3BJQ5lGjtNYM5T6nv-4uT1mHMbIaaT8-4FPPd9CTtOm8LKGmmDgpabVZkgcKq_LTGU5DfEFe9bDUOjlIZ6xX5-vfl5-ba6_f_l2-em6Qe1UbaD1Hp31MqJqPdiIQNpGDUYTKRMxgtYdgrCAd7ZTwkhA2cpOaNMTCnXG3u7nrvN0v6FSwyoVpGGAkeYdg-2cno-X_wWlsb61Ts-g3oOYp1Iy9WGd0wryQ5Ai7KSHndGwMxq8Cn-lBzW3vT7M39ytKB6bDpbn-ptDHQrC0GcYMZUjpq22pnUzdrHH5n_QNlEOBRONSDFlwhrilP69xyP2S53s</recordid><startdate>19930701</startdate><enddate>19930701</enddate><creator>Kukkonen, Heljä</creator><creator>Rovamo, Jyrki</creator><creator>Tiippana, Kaisa</creator><creator>Näsänen, Risto</creator><general>Elsevier Ltd</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>19930701</creationdate><title>Michelson contrast, RMS contrast and energy of various spatial stimuli at threshold</title><author>Kukkonen, Heljä ; Rovamo, Jyrki ; Tiippana, Kaisa ; Näsänen, Risto</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c483t-a299c8791dc329a7dcae47d4a64ee36dcda445ca07acb753061ac1215046fec03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Biological and medical sciences</topic><topic>Contrast energy</topic><topic>Contrast Sensitivity - physiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Gratings</topic><topic>Humans</topic><topic>Michelson contrast</topic><topic>Noise stimuli</topic><topic>Perception</topic><topic>Photic Stimulation</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Psychophysics</topic><topic>RMS contrast</topic><topic>Sensory Thresholds - physiology</topic><topic>Spots</topic><topic>Vision</topic><topic>Vision Tests - instrumentation</topic><topic>Vision Tests - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kukkonen, Heljä</creatorcontrib><creatorcontrib>Rovamo, Jyrki</creatorcontrib><creatorcontrib>Tiippana, Kaisa</creatorcontrib><creatorcontrib>Näsänen, Risto</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>Vision research (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kukkonen, Heljä</au><au>Rovamo, Jyrki</au><au>Tiippana, Kaisa</au><au>Näsänen, Risto</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Michelson contrast, RMS contrast and energy of various spatial stimuli at threshold</atitle><jtitle>Vision research (Oxford)</jtitle><addtitle>Vision Res</addtitle><date>1993-07-01</date><risdate>1993</risdate><volume>33</volume><issue>10</issue><spage>1431</spage><epage>1436</epage><pages>1431-1436</pages><issn>0042-6989</issn><eissn>1878-5646</eissn><coden>VISRAM</coden><abstract>Contrast sensitivity was measured as a function of median spatial frequency for vertical cosine gratings, narrow-band noise stimuli, and spots with luminance increment or decrement. 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| ispartof | Vision research (Oxford), 1993-07, Vol.33 (10), p.1431-1436 |
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| subjects | Biological and medical sciences Contrast energy Contrast Sensitivity - physiology Fundamental and applied biological sciences. Psychology Gratings Humans Michelson contrast Noise stimuli Perception Photic Stimulation Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychophysics RMS contrast Sensory Thresholds - physiology Spots Vision Vision Tests - instrumentation Vision Tests - methods |
| title | Michelson contrast, RMS contrast and energy of various spatial stimuli at threshold |
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