Research reportObject segmentation and visual neglect
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Cited by (36)
Attention capture by salient object groupings in the neglected visual field
2021, CortexCitation Excerpt :As in the current study, in many previous studies, a key approach for investigating whether selective attention is required for visual object integration has been to assess brain-damaged patients with impaired attentional functioning. For instance, impairments of selective attention have been demonstrated in patients suffering from visual hemi-neglect and associated extinction behavior (Driver, 1995; Kerkhoff, 2001). Contralesional visuo-spatial neglect is characterized by the failure to attend, respond adequately, or orient voluntarily to stimuli in the contralesional hemispace (Karnath, Milner, & Vallar, 2002; Kerkhoff, 2001).
Attention as the ‘glue’ for object integration in parietal extinction
2018, CortexCitation Excerpt :Accordingly, the lack of attention to stimuli on the contralesional side is a relative, rather than an absolute, deficit, with fewer attentional resources allocated to the contralesional, as compared to the ipsilesional, hemifield (Bays, Singh-Curry, Gorgoraptis, Driver, & Husain, 2010; Gögler, Finke, Keller, Müller, & Conci, 2016). Despite their extinction behavior, these patients display preserved access to complete objects (Driver, 1995, for review). Intact processing has, for instance, been reported in a variety of studies that presented stimulus fragments that had to be grouped across the two hemifields to form a complete object for explicit report (Brooks, Wong, & Robertson, 2005; Driver, Baylis, & Rafal, 1992; Gilchrist, Humphreys, & Riddoch, 1996; Marshall & Halligan, 1994; Pavlovskaya, Sagi, Soroker, & Ring, 1997; Ro & Rafal, 1996; Robertson, Eglin, & Knight, 2003; Vuilleumier & Landis, 1998; Vuilleumier, Valenza, & Landis, 2001; Ward, Goodrich, & Driver, 1994).
Emotional processing and its impact on unilateral neglect and extinction
2012, NeuropsychologiaCitation Excerpt :It remains unclear, however, whether the N170 is generated in the fusiform gyri and/or other cortical regions (George et al., 1999; Kanwisher et al., 1997). In any case, both the behavioral (Fox, 2002a; Vuilleumier, 2000) and neurophysiological data (Vuilleumier, Sagiv, et al., 2001) converge to support the idea that face analysis and categorization may take place in the intact early visual processing stages of the ventral occipito-temporal stream, before information from the contralesional field is influenced by top-down attention and selected (or not) for conscious awareness (Driver, 1995; Rafal, 1994; Ward & Goodrich, 1996). Over and above faces in themselves, faces with emotional expressions may exert further influences on spatial neglect.
Are objects the same as groups? ERP correlates of spatial attentional guidance by irrelevant feature similarity
2011, Brain ResearchCitation Excerpt :While numerous studies have focused on interactions between perception and attention systems (for recent reviews, e.g., Beck and Kastner, 2009; Carrasco, 2006; Hopf et al., 2005; Van der Stigchel et al., 2009), object-based attention has been characterized as a function of the bottom-up control of attentional deployment, which is based on perceptual processing that constructs object representations (e.g., Desimone and Duncan, 1995). A consistent notion is that objects are the most fundamental units of attentional selection (for reviews, see Driver and Baylis, 1998; Scholl, 2001), which has been proposed based on convergent evidence that representations of task-irrelevant spatial locations/features are facilitated if they belong to the same object or group as a task-relevant location/feature, in behavioral experimental psychology studies (e.g., Driver and Baylis, 1989; Duncan, 1984; Egly et al., 1994; Kramer and Jacobson, 1991), neuroimaging studies (e.g., Martínez et al., 2006; Müller and Kleinschmidt, 2003; O'Craven et al., 1999; Schoenfeld et al., 2003), and neuropsychology studies in brain-damaged patients (e.g., Driver, 1995; Humphreys, 1999). Object-based attentional selection appears consistent with our rapid and effortless cognition and action toward objects in daily life.
Shifting attention in viewer- and object-based reference frames after unilateral brain injury
2011, NeuropsychologiaCitation Excerpt :Whether performance is ameliorated by reorienting from one object into another or by reorienting within one central object, both findings confirm that object information can be utilized despite impaired visual spatial awareness. Thus, the presence of an object or a group of objects (preattentively) influences the distribution of an attentional deficit (e.g., Boutsen & Humphreys, 2000; Brooks, Wong & Robertson, 2005; Driver, 1995; Driver, Baylis & Rafal, 1992; Gilchrist, Humphreys, & Riddoch, 1996; Grabowecky, Robertson & Treisman, 1993; Mattingley et al., 1997; Pavlovskaya, Sagi, Soroker, & Ring, 1997; Ward, Goodrich, & Driver, 1994). In our study, contralesional and ipsilesional object-based effects were not related within an individual, indicating that object-based sensitivity is not uniform across viewer-based space.