Title: Bloch's law and the dynamics of feature fusion
Authors: Scharnowski, Frank ×
Hermens, Frouke
Herzog, Michael H #
Issue Date: Aug-2007
Publisher: Pergamon-elsevier science ltd
Series Title: Vision research vol:47 issue:18 pages:2444-2452
Abstract: How the visual brain integrates temporally dispersed information is an open question. Often, it is assumed that the visual system simply sums light over a certain period of time (e.g. Bloch's law). However, in feature fusion, information presented later dominates, suggesting complex temporal dynamics that cannot be described by simple energy summation. For example, if two verniers are presented in rapid succession at the same location, they are not perceived individually but they fuse to one single vernier. The perceived offset of the fused vernier is a combination of the offsets of the two presented verniers, with the later one dominating. Here, we show that indeed, Bloch's law does not hold across verniers in a sequence. However, changes in the luminance of a single vernier can be compensated for by changes in its duration in accordance with Bloch's law. We present a simple model to demonstrate that these findings can be explained by decaying neural activation. (C) 2007 Elsevier Ltd. All rights reserved.
ISSN: 0042-6989
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory for Experimental Psychology
× corresponding author
# (joint) last author

Files in This Item:

There are no files associated with this item.

Request a copy


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science