Logical studies--Measurements of activity in visual cortex have supplied the neural

Early PET and fMRI (Beauchamp, Cox, DeYoe, 1997; Shulman et al., 1999; Watanabe et al., 1998) studies indicate that FBA modulates activity in various visual locations (e.g., V1 and MT+/V5) in Overt spatial interest: endogenous and exogenous William James described two various response to expectations relating to the task-relevant Overt spatial interest: endogenous and exogenous William James described two various feature dimension. Neuroimaging research have also shown FBA modulation of targets which can be spatially coextensive with distractors of different feature values. As an example, attending to one colour inside a display containing intermingled colored moving dots increases the amplitude ofVision Res. Author manuscript; readily available in PMC 2012 July 05.NIH-PA Author Manuscript NIH-PA Author Manuscript NIH-PA Author ManuscriptCarrascoPageSSVEPs to that colour when compared with when that colour is not attended (Muller et al., 2006). Research employing voxel-based multivariate pattern classification overcome the spatial resolution limitations of fMRI, as a result enabling the assessment of featural attentional effects in particular retinotopic visual places. When participants attended to a single of two superimposed grid patterns, a classifier determined by voxels from V1 to V4 could reliably predict the attended orientation (Kamitani Tong, 2005). Consideration increases the BOLD response in voxels tuned for the attended orientation (or near it), relative to voxels tuned title= 2016/5789232 for the unattended orientation. Constant using the feature-similarity achieve model, this pattern of responses suggests that attending to 1 orientation biased the population activity toward the attended orientation, the behaviorally relevant stimuli, at the expense of behaviorally irrelevant stimuli (see also Serences Boynton, 2007; Serences, Saproo, Scolari, Ho, Muftuler, 2009). A further valuable method to investigate FBA across many regions in human visual cortex is fMRI response adaptation.Logical studies--Measurements of activity in visual cortex have supplied the neural correlates of FBA. FBA selectively modifies the neural representations of elements inside visual scenes that match the currently attended function. An early study of FBA in location V4 illustrates this modification. Monkeys had been educated to view a rapid sequence of gratings and to respond when they saw a grating that matched the orientation of a cue grating. The responses of most recorded neurons varied based on which orientation the animal was trying to find (Haenny et al., 1988; see also Hayden Gallant, 2005; Maunsell et al., 1991). The neural signatures of FBA have also been investigated working with neuroimaging methods. Early PET and fMRI (Beauchamp, Cox, DeYoe, 1997; Shulman et al., 1999; Watanabe et al., 1998) research indicate that FBA modulates activity in many visual locations (e.g., V1 and MT+/V5) in response to expectations relating to the task-relevant feature dimension.Logical studies--Measurements of activity in visual cortex have offered the neural correlates of FBA. FBA selectively modifies the neural representations of elements within visual scenes that match the currently attended function. An early study of FBA in location V4 illustrates this modification. Monkeys were trained to view a rapid sequence of gratings and to respond after they saw a grating that matched the orientation of a cue grating. The responses of most recorded neurons varied based on which orientation the animal was looking for (Haenny et al., 1988; see also Hayden Gallant, 2005; Maunsell et al., 1991). The neural signatures of FBA have also been investigated utilizing neuroimaging approaches.