BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4//
BEGIN:VEVENT
UID:20250803T052553EDT-76836GOfZt@132.216.98.100
DTSTAMP:20250803T092553Z
DESCRIPTION:Models of contrast summation in human vision\n\nAlexander Baldw
 in\, ºÚÁϲ»´òìÈ University\n	Tuesday March 14\, 12-1pm\n	Zoom Link: https://mcgi
 ll.zoom.us/j/86855481591\n\nAbstract: In visual psychophysics\, we aim to 
 characterise and explain human behaviour when performing a task involving 
 a visual stimulus. One of the simplest abilities we can investigate is the
  detection of a low contrast target. For example\, an experiment might inv
 olve asking a participant whether they can see a small pattern shown on a 
 display. In general\, when the contrast is very low the target will be too
  faint to be seen. By measuring detection performance as a function of con
 trast\, one can find the contrast required for reliable detection of that 
 target. It is generally the case that larger targets can be detected at lo
 wer contrast. The nature of the relationship between size and detectabilit
 y has been investigated through studies of spatial summation. One central 
 question has been whether the 'summation' that occurs reflects an additive
  pooling of local responses to parts of the target. This would benefit per
 formance by increasing the signal-to-noise ratio at the decision stage. Ot
 her 'probability summation' models attribute the performance benefit to th
 e participant having more opportunities to detect a larger target's indivi
 dual parts. In this seminar\, I will discuss various simple models of summ
 ation and their implications for visual processing.\n
DTSTART:20230314T160000Z
DTEND:20230314T170000Z
SUMMARY:QLS Seminar Series - Alexander Baldwin
URL:/qls/channels/event/qls-seminar-series-alexander-b
 aldwin-346229
END:VEVENT
END:VCALENDAR