The time-course of activation in the dorsal and ventral visual streams during landmark cueing and perceptual discrimination tasks

Accident Vulnerability and Vision for Action

“…Although not without critics (Rossetti, Pisella, & McIntosh, 2017), dual stream characterisations of visual functioning have been supported by an impressive array of findings from research with animal (Ungerleider & Mishkin, 1982) as well as human (Ganel & Goodale, 2017;Milner & Goodale, 2006) participants, including neuropsychological, behavioural and neuroimaging (Goodale & Milner, 2018;Milner, 2012) studies. In extending this framework, noted that shifts of attention, both overt and covert can be considered visually guided actions, and presented evidence in support of the proposal that rapid shifts of attention are associated with dorsal stream encoding of visual input (see also (Lambert & Wootton, 2017;Marrett et al, 2011); Viewed from this dual-stream perspective, it seems likely that vision for action (including the ability to shift attention rapidly in response to new visual information), rather than vision for perception, is likely to be the aspect of visual functioning most closely associated with accident vulnerability. Indeed, our central hypothesis is the direct corollary of Milner and Goodale's (2006) contention that 'vision for action' enables rapid and accurate performance of visually guided actions: Accordingly, sub-optimal vision for action should be associated with impaired performance of visually guided actions, and increased susceptibility to accidents caused by failures to link vision with action.…”

“…This novel test incorporates design features that target dorsal visual stream processing. Its structure is based on the landmark cueing procedure Lambert & Wootton, 2017) which combines elements of the attentional cueing techniques devised by Michael Posner and colleagues ((Posner, 1980;Posner, Snyder, & Davidson, 1980) and the landmark learning procedure described by (Ungerleider & Mishkin, 1982). In landmark cueing, participants shift attention towards a peripheral target object, which is preceded by bilateral cue stimuli.…”

“…The target object is likely to appear at the same location as one of the cues, termed the landmark stimulus. Behavioural , electrophysiological (Lambert & Wootton, 2017;Marrett et al, 2011) and neuropsychological (Marrett et al, 2011) evidence indicates that the dorsal visual stream plays a key role in the featural encoding that drives rapid attention-shifting in response to information provided by landmark cues. In the Vision for Action Test described in detail below, participants were presented with peripheral shapes, comprising a circle and a triangle, and were asked to move their eyes to the location of the landmark shape (circle or triangle, counter-balanced between participants), in order to discriminate a target object (a digit) presented there.…”

Cognitive penetration of early vision in face perception

“…Likewise, such top-down effects suppose major advantages for motor responses. The information on a nearby potential threat conveyed by an angry or a fearful face is prioritised and rapidly transmitted through the dorsal stream to produce an immediate motor reaction (e.g., to flee) (Lambert and Wootton, 2017;Marrett et al, 2011;Milner and Goodale, 2006).…”

Accident Vulnerability and Vision for Action: A Pilot Investigation

“…Although not without critics [9], dual-stream characterisations of visual functioning have been supported by an impressive array of findings from research with animal [10] as well as human [2,11] participants, including neuropsychological, behavioural and neuroimaging [12,13] studies. In extending this framework, Lambert et al [14] noted that shifts of attention, both overt and covert, can be considered visually guided actions, and presented evidence in support of the proposal that rapid shifts of attention are associated with dorsal stream encoding of visual input (see also [15,16]). Viewed from this dual-stream perspective, it seems likely that vision-for-action (including the ability to shift attention rapidly in response to new visual information), rather than vision-for-perception, is likely to be the aspect of visual functioning most closely associated with accident vulnerability.…”