Johnston et al. / Brain and Cognition 108 (2016) 20?Fig. three. Bivariate correlations: visual tasks.

Scatterplots showing the relationships among coherence thresholds for the visual tasks in the whole sample (N = 106). Good and negative z-scores indicate coherence thresholds greater than and significantly less than the mean in the sample, respectively. / p Involves sudden and unexpected organic deaths in non-hospitalized persons [18. The Pathology] within the complete sample (N = 106). It is possible that readers with dyslexia differ from generally poor readers on other tasks, but we have clearly shown that on tasks of global motion and global form processing they perform similarly to generally poor readers. Taken together, the results of the whole-sample title= gjhs.v8n9p44 and betweengroup analyses demonstrate that the underlying nature from the visual deficit in readers with dyslexia and normally title= cmr.2012.1100.ps1-07 poor readers reflects a difficulty processing temporal, instead of motion, data per se. An intriguing query is no matter if this impairment generalises to other sensory domains. Recently, it has been suggested that auditory temporal sampling is impaired in poor readers (Goswami, 2011). Inside this framework, spoken words are encoded by phase-locking of brain activity in diverse frequency bands. Low-frequency gamma oscillations (25?five Hz) are dominant in the left title= 2152-7806.162550 hemisphere and have already been implicated within the analyses of phonemes, whereas delta-theta rhythms (1? Hz) are lateralised for the correct hemisphere and are thought to play a majorrole inside the processing of syllabic and prosodic cues (Poeppel, 2003). There is certainly debate as to no matter if slow or quickly sampling is abnormal in poor readers but recent studies support the view that auditory entrainment within the gamma frequency band is impaired (Lehongre, Morillon, Giraud, Ramus, 2013; Lehongre, Ramus, Villiermet, Schwartz, Giraud, 2011). This is believed to manifest as a deficit with the temporal segmentation of phonemic units within the speech stream (Giraud Ramus, 2013). Furthermore, our benefits also suggest that the visual deficit is exacerbated when nearby visual cues have to be integrated across numerous (>2) dimensions. Impairment was most marked around the random-dot global motion process as well as the temporally-defined international form activity, as indicated by the effect sizes in Tables 4 and 6. Each of these tasks needed integration of local visual cues across two dimensions of space at the same time as over time. If this explanation is valid then commonly poor readers and individuals with dyslexia ought to also exhibit deficits on a array of other visual tasks. For instance,.