publication . Article . 2002

Noise frame duration, masking potency and whiteness of temporal noise

Kukkonen, Helja; Rovamo, Jyrki; Donner, Kristian; Tammikallio, Marja; Raninen, Antii;
Open Access English
  • Published: 01 Sep 2002
  • Publisher: Association for Research in Vision and Ophthalmology
  • Country: United Kingdom
PURPOSE. Because of the limited contrast range, increasing the duration of the noise frame is often the only option for increasing the masking potency of external, white temporal noise. This, however, reduces the high-frequency cutoff beyond which noise is no longer white. This study was conducted to determine the longest noise frame duration that produces the strongest masking effect and still mimics white noise on the detection of sinusoidal flicker. \ud \ud METHODS. Contrast energy thresholds (Eth) were measured for flicker at 1.25 to 20 Hz in strong, purely temporal (spatially uniform), additive, external noise. The masking power of white external noise, cha...
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