white_noise.xml 3.8 KB

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  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <?xml-stylesheet type="text/xsl" href="odmlTerms.xsl" xmlns:odml="http://www.g-node.org/odml"?>
  3. <!-- ********************************************************* -->
  4. <!-- White Noise stimulus -->
  5. <!-- ********************************************************* -->
  6. <odML version="1.1">
  7. <version>1.0</version>
  8. <date>2011-01-21</date>
  9. <repository>http://portal.g-node.org/odml/terminologies/v1.1/terminologies.xml</repository>
  10. <section>
  11. <type>stimulus/white_noise</type>
  12. <name>WhiteNoise</name>
  13. <definition>Property definitions to describe a white noise stimulus.</definition>
  14. <property>
  15. <name>Modality</name>
  16. <definition>The stimulus modality like acoustic, haptic, light etc.</definition>
  17. <type>string</type>
  18. </property>
  19. <property>
  20. <name>Duration</name>
  21. <definition>The duration of the stimulus in seconds.</definition>
  22. <type>float</type>
  23. <unit>s</unit>
  24. </property>
  25. <property>
  26. <name>OffsetTime</name>
  27. <definition>The temporal offset (with respect to the begin of the recorded trial) with which this stimulus was
  28. presented.
  29. </definition>
  30. <type>float</type>
  31. <unit>s</unit>
  32. </property>
  33. <property>
  34. <name>Function</name>
  35. <definition>The function of the described stimulus. E.g. if the white noise constituted the carrier.</definition>
  36. <type>string</type>
  37. </property>
  38. <property>
  39. <name>OutputChannel</name>
  40. <definition>The physical output device (e.g. an analog output channel, a monitor screen, the same loudspeaker,
  41. etc.). This information can be used to explicitly express that several stimuli (that share the same
  42. OutputChannel) are jointly presented.
  43. </definition>
  44. <type>string</type>
  45. </property>
  46. <property>
  47. <name>Mean</name>
  48. <definition>The mean intensity of the white noise stimulus.</definition>
  49. <type>float</type>
  50. </property>
  51. <property>
  52. <name>Variance</name>
  53. <definition>The variance of the white noise stimulus.</definition>
  54. <type>float</type>
  55. </property>
  56. <property>
  57. <name>LowerCutoffFrequency</name>
  58. <definition>The low frequency cutoff of the highpass filter with which the stimulus was filtered. (Lowest
  59. frequency may also be limited by the stimulus duration)
  60. </definition>
  61. <type>float</type>
  62. <unit>Hz</unit>
  63. </property>
  64. <property>
  65. <name>UpperCutoffFrequency</name>
  66. <definition>The upper frequency cutoff of lowpass filter with which the stimulus was filtered. (Upper cutoff may
  67. also be defined by the nyquist frequency, respective the sample rate.)
  68. </definition>
  69. <type>float</type>
  70. <unit>Hz</unit>
  71. </property>
  72. <property>
  73. <name>Filter</name>
  74. <definition>The filter method applied to limit the frequency content of the stimulus.</definition>
  75. <type>string</type>
  76. </property>
  77. <property>
  78. <name>Position</name>
  79. <definition>The position of the stimulus on e.g the screen. Specified as a 2-tuple (x;y). By default this position
  80. refers to the top-left corner of the object or its bounding box.
  81. </definition>
  82. <type>2-tuple</type>
  83. </property>
  84. <property>
  85. <name>PositionReference</name>
  86. <value>[top-left, center, bottom-right]</value>
  87. <definition>By default stimulus positions are specified by the coordinates of the top-left corner (or of the
  88. bounding box). Use this property for other definitions.
  89. </definition>
  90. <type>string</type>
  91. </property>
  92. <property>
  93. <name>SpatialExtent</name>
  94. <definition>The spatial extend of the presented stimulus (width;height) e.g. (1024;768).</definition>
  95. <type>2-tuple</type>
  96. </property>
  97. </section>
  98. </odML>