1. Eigsti IM, Fein DA. {{More Is Less: Pitch Discrimination and Language Delays in Children with Optimal Outcomes from Autism}}. {Autism Res};2013 (Aug 8)
The autism spectrum disorders (ASD) are neurodevelopmental disorders diagnosed behaviorally but associated with differences in brain development. Individuals with ASD exhibit superior auditory perceptual skills, which may correlate with ASD symptomatology, particularly language skills. We describe findings from individuals diagnosed with ASD before age five, who now have no symptoms (e.g., having optimal outcomes). Unlike an ASD group, which shows heightened pitch discrimination, the Optimal Outcome group’s abilities do not differ from those of typically developing controls. Furthermore, pitch discrimination is associated with both current autism symptomatology and early-language milestones. Findings illuminate processes associated with resolution of autism. We also discuss a specific mechanism by which heightened auditory discrimination leads to language delays in ASD. Autism Res 2013, : -. (c) 2013 International Society for Autism Research, Wiley Periodicals, Inc.
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2. Fan YT, Chen C, Chen SC, Decety J, Cheng Y. {{Empathic arousal and social understanding in individuals with autism: evidence from fMRI and ERP measurements}}. {Soc Cogn Affect Neurosci};2013 (Aug 7)
Lack of empathy is a hallmark of social impairments in individuals with autism spectrum disorder (ASD). However, the concept empathy encompasses several socio-emotional and behavioral components underpinned by interacting brain circuits. This study examined empathic arousal and social understanding in individuals with ASD and matched controls by combining pressure pain thresholds (PPT) with fMRI (study 1) and EEG/ERP and eye-tracking responses (study 2) to empathy-eliciting stimuli depicting physical bodily injuries. Results indicate that participants with ASD had lower PPT than controls. When viewing body parts being accidentally injured, increased hemodynamic responses in the somatosensory cortex (SI/SII) but decreased responses in the anterior mid-cingulate and anterior insula as well as heightened N2 but preserved late-positive potentials (LPP) were detected in ASD participants. When viewing a person intentionally hurting another, decreased hemodynamic responses in the medial prefrontal cortex and reduced LPP were observed in the ASD group. PPT was a mediator for the SI/SII response in predicting subjective unpleasantness ratings to others’ pain. Both ASD and control groups had comparable mu suppression, indicative of typical sensorimotor resonance. The findings demonstrate that, in addition to reduced pain thresholds, individuals with ASD exhibit heightened empathic arousal but impaired social understanding when perceiving others’ distress.
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3. Johnson NL, Rodriguez D. {{Children with autism spectrum disorder at a pediatric hospital: a systematic review of the literature}}. {Pediatr Nurs};2013 (May-Jun);39(3):131-141.
This review of literature describes the behaviors of hospitalized children with autism spectrum disorder (ASD) that health care providers find challenging. It also identifies strategies used to address these challenging behaviors. The systematic review of literature identified 34 articles from databases on health care of challenging behaviors of children with ASD. The review identified four categories of challenging behaviors (non-compliance, hyperactivity, sensory defensiveness, self-injury) and several strategies for reducing these behaviors. Partnering with parents to develop strategies is important for children with ASD to deliver timely and safe care.
4. Koolen S, Vissers CT, Egger JI, Verhoeven L. {{Can monitoring in language comprehension in Autism Spectrum Disorder be modulated? Evidence from Event-Related Potentials}}. {Biol Psychol};2013 (Aug 5)
The present study examined language comprehension in Autism Spectrum Disorder (ASD) in light of monitoring. It was studied whether individuals with ASD monitor their language perception, and whether monitoring during language perception could be modulated with instructions. We presented higher-level (semantic) linguistic violations and lower-level (orthographic) linguistic violations in a free reading condition and in an instructed condition, recording event-related potentials. For control participants, a monitoring response as tapped by the P600 effect was found to semantically and orthographically incorrect input in both conditions. For participants with ASD, however, a monitoring response to semantically implausible input, tapped by the P600, was found only in the instructed condition. For orthographic errors monitoring was observed both in the free reading and in the instructed condition. This suggests that people with ASD are less inclined than typical individuals to monitor their perception of higher-level linguistic input, but that this can be enhanced with instructions.
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5. McCurry TC, Lawrence LM, Wilson ME, Mayo L. {{The plusoptiX S08 photoscreener as a vision screening tool for children with autism}}. {J AAPOS};2013 (Aug 5)
PURPOSE: Children with autism and related disorders reportedly have an increased prevalence (40%) of ocular disorders, and comprehensive eye examinations by a pediatric ophthalmologist are recommended. Examinations can be very time consuming, expensive, and stressful for the child. A photoscreener such as the plusoptiX S08 may be a cost-effective, time-saving, and less invasive method for testing patients with autism. The purpose of this study was to determine the efficacy of photoscreening with the plusoptiX S08 in detecting amblyopia risk factors in children with autism. METHODS: Photoscreening and complete ophthalmologic examinations were performed on 43 children with autism. Prevalence, sensitivity, specificity, positive predictive value, and negative predictive value were calculated using ophthalmologic examination as the gold standard. RESULTS: The gold standard examination used American Association for Pediatric Ophthalmology and Strabismus Vision Screening Committee guidelines for the definition of amblyopia risk factors. The plusoptiX S08 referred 29 (67%) of 43 children. On examination, 16 patients (37%) had amblyopia risk factors. The plusoptiX S08 had a sensitivity of 94% (95% CI, 0.68-0.99). The specificity was 48% (95% CI, 0.29-0.68), the positive predictive value was 52% (95% CI, 0.33-0.70), and the negative predictive value was 93% (95% CI, 0.64-0.99). CONCLUSIONS: The plusoptiX S08 is sensitive but less specific at detecting treatable ocular conditions in children with autism. The majority of children with autism and amblyopia risk factors were detected on screening; however, about half of all referrals had no amblyopia risk factors. The plusoptiX S08 reduced the need for a full examination in one-third of the children screened.
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6. Schneider A, Seritan A, Tassone F, Rivera SM, Hagerman R, Hessl D. {{Psychiatric features in high-functioning adult brothers with fragile x spectrum disorders}}. {Prim Care Companion CNS Disord};2013;15(2)
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7. Yi L, Fan Y, Quinn PC, Feng C, Huang D, Li J, Mao G, Lee K. {{Abnormality in face scanning by children with autism spectrum disorder is limited to the eye region: Evidence from multi-method analyses of eye tracking data}}. {J Vis};2013;13(10)
There has been considerable controversy regarding whether children with autism spectrum disorder (ASD) and typically developing children (TD) show different eye movement patterns when processing faces. We investigated ASD and age- and IQ-matched TD children’s scanning of faces using a novel multi-method approach. We found that ASD children spent less time looking at the whole face generally. After controlling for this difference, ASD children’s fixations of the other face parts, except for the eye region, and their scanning paths between face parts were comparable either to the age-matched or IQ-matched TD groups. In contrast, in the eye region, ASD children’s scanning differed significantly from that of both TD groups: (a) ASD children fixated significantly less on the right eye (from the observer’s view); (b) ASD children’s fixations were more biased towards the left eye region; and (c) ASD children fixated below the left eye, whereas TD children fixated on the pupil region of the eye. Thus, ASD children do not have a general abnormality in face scanning. Rather, their abnormality is limited to the eye region, likely due to their strong tendency to avoid eye contact.
