Chapter 15 Meaning, attention, and the “unity assumption” in the intersensory bias of spatial and temporal perceptions

By R. Welch. 1999

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Assessing the Role of the ‘Unity Assumption’ on Multisensory Integration: A Review (2017, background): “…most contentious Frontiers in Psychology | www.frontiersin.org 6 March 2017 | Volume 8 | Article 445 issues in multisensory perception research over the last 60 years or so (e.g., Vroomen, 1999; Welch, 1999; see Welch and Warren, 1980; Vatakis and Spence, 2007; Chen and Vroomen, 2013, for reviews).”
When emotional valence modulates audiovisual integration (2012, unknown): “Following the idea that the more reliable input influences the multisensory percept more (Ernst & Bülthoff, 2004; Welch, 1999; Welch & Warren, 1980), it would be predicted that such an increased reliability of the auditory channel should result in a higher weighting for auditory inputs as compared…”
No effect of synesthetic congruency on temporal ventriloquism (2010, background): “…the assumption of unity, which states that the more events from different modalities share (amodal) properties, the more likely it is that they originate from a common object or source (e.g., Bedford, 1989; Bertelson, 1999; Radeau, 1994; Stein & Meredith, 1993; Welch, 1999; Welch & Warren, 1980).”
Interactions of auditory and visual stimuli in space and time. (2009, background): “The first is the modality specificity hypothesis (Welch and Warren, 1980; Welch, 1999) which posits that the sensory modality with the greater acuity for the discrimination to be made will dominate the percept with respect to that discrimination.”
Again, Knowledge of Common Source Fails to Promote Visual-Haptic Integration (2014, background): “Welch (1999 ) regarded the unity decision to be primarily driven by © Perceptual & Motor Skills 20142014, 118, 1, 183-194.”
Audiovisual multisensory integration (2007, background): “integration has proved to be one of the most contentious issues in multisensory research over the last 50 years ([2,47]; see [1] for a recent review).”
Perception of intersensory synchrony: A tutorial review (2010, unknown): “…as information from different modalities share more (amodal) properties, the more likely it is that the brain treats them as originating from a common object or source (see, e.g., Bedford, 1989; Bertelson, 1999; Radeau, 1994; Spence, 2007; Stein & Meredith, 1993; Welch, 1999; Welch & Warren, 1980).”
Semantic congruency and the Colavita visual dominance effect (2008, background): “…considered as structural (i.e. bottom-up) factors that determine the actual physical relationship between auditory and visual stimuli (see Radeau and Bertelson 1977, for a discussion of structural/bottom-up and cognitive/top-down factors inXuencing multisensory perception; Spence 2007; Welch 1999).”
When vision ‘extinguishes’ touch in neurologically-normal people: extending the Colavita visual dominance effect (2008, background): “According to research on the ‘unity assumption’ (e.g., Spence 2007; Vatakis and Spence 2007; Welch 1999; Welch and Warren 1980), stimuli are increasingly likely to be perceived as reXecting a single, unitary event, the more amodal properties (i.e., those that can be deWned without reference to a…”
Looking hot or feeling hot: What determines the product experience of warmth? (2010, background): “For example, vision is more appropriate for spatial perception, audition is more appropriate for the detection of temporal events [27], while touch is best suited for tasks that relate to the material properties of objects [28].”
Facilitation of multisensory integration by the "unity effect" reveals that speech is special. (2008, background): “…are based, at least in part, on the consistency of the information available to each sensory modality (Spence, 2007; Vatakis & Spence, 2007, 2008; Welch, 1999a, 1999b; Welch & Warren, 1980; note that higher-level factors also include phenomena such as perceptual grouping and phenomenal…”
Perception of intersensory synchrony in audiovisual speech: not that special. (2011, background): “…will treat them as originating from a common object or source (see, e.g., Bedford, 1989; Bertelson, 1999; Radeau, 1994; Stein & Meredith, 1993; Welch, 1999; Welch & Warren, 1980) Without doubt, the most important amodal property is commonality in time (e.g. Radeau, 1994), though commonality…”