Anna is marketing communications manager for Robert Marc. His name is Dov Yitzchak, and everyone is doing well. Emily and Ari live in Ann Arbor, Mich. Richard Lo and Sophy Yem were married on Oct. The couple is lobbying Sherman dining hall to add an all-you-can-nurse buffet. Ilana Herring spent four months living in Jerusalem.
She will continue managing Internet marketing for calmu. Author manuscript; available in PMC Jun PMID: Author information Copyright and License information Disclaimer. Copyright notice. The publisher's final edited version of this article is available at Autism Res.
See other articles in PMC that cite the published article. Go to:. Keywords: autism, MEG, auditory, noise, connectivity, feedback, top-down. ASD n. Open in a separate window. Sub-Label Time Series Extraction To compute coherence between the temporal sub-labels with frontal sub-labels each vertex inside every sub-label, were first averaged across vertices to generate the mean sub-label time course.
Time Frequency Decomposition The 2D epoched time series was then convolved with a dictionary of complex Morlet wavelets each spanning seven cycles , resulting in three dimensional complex spectra epoch-time-frequency matrix S k t , f. Functional Connectivity Computation Unnormalized coherence: The coherence between each temporal-frontal sub-label pair was computed for all frequencies between 8 Hz and 60 Hz for standard and deviant trials separately. Statistical Analysis of Functional Connectivity: Correction in Time, Frequency and Space All statistics on the functional connectivity, measured using coherence, were carried out in three steps using the entire analyzed range: 50— ms in time, and all frequencies from 8 to 60 Hz.
More specific details for each comparison are as follows: Standard versus deviant within group: Normalized coherence deviant normalized by standard was used to assess the difference between standard and deviant for each condition quiet and noise and each hemisphere left, right and both groups TD, ASD. Figure 1. Figure 2.
Figure 3. Figure 4. Figure 5. Figure 6. Human Brain Mapping. Journal of Child Psychology and Psychiatry. Cerebral Cortex.
A cortical mechanism for triggering top-down facilitation in visual object recognition. Journal of Cognitive Neuroscience. The proactive brain: Memory for predictions. Visual areas exert feedforward and feedback influences through distinct frequency channels. Communication through coherence with inter-areal delays.
Current Opinion in Neurobiology. Impaired timing and frequency discrimination in high-functioning autism spectrum disorders. Journal of Autism and Developmental Disorders. Functional changes in inter- and intra-hemispheric cortical processing underlying degraded speech perception. Attention does not modulate neural responses to social stimuli in autism spectrum disorders. Annals of Neurology. Auditory stream segregation in autism spectrum disorder: Benefits and downsides of superior perceptual processes.
The saccadic spike artifact in MEG. Top-down modulation of the perception of other people in schizophrenia and autism. Frontiers in Human Neuroscience. Cortical surface-based analysis. Segmentation and surface reconstruction.
Auditory processing in high-functioning adolescents with autism spectrum disorder. PLoS One. Automatic parcellation of human cortical gyri and sulci using standard anatomical nomenclature. Unreliable evoked responses in autism. Prefrontal cortex involvement in preattentive auditory deviance detection: Neuroimaging and electrophysiological evidence. ICRA noises: Artificial noise signals with speech-like spectral and temporal properties for hearing instrument assessment.
International Collegium for Rehabilitative Audiology. Neuromagnetic oscillations predict evoked-response latency delays and core language deficits in autism spectrum disorders.
Attention capture by auditory significant stimuli: Semantic analysis follows attention switching. European Journal of Neuroscience. II: Inflation, flattening, and a surface-based coordinate system. High-resolution intersubject averaging and a coordinate system for the cortical surface. What do imaging studies tell us about the neural basis of autism?
Novartis Foundation Symposia. The mismatch negativity: A review of underlying mechanisms. Clinical Neurophysiology. Brain generators implicated in the processing of auditory stimulus deviance: A topographic event-related potential study.
Change detection in children with autism: An auditory event-related fMRI study. Emergence: Labeled autistic. New York: Arena Press; Gamma and beta frequency oscillations in response to novel auditory stimuli: A comparison of human electroencephalogram EEG data with in vitro models.
A review of behavioural and electrophysiological studies on auditory processing and speech perception in autism spectrum disorders. Research in Autism Spectrum Disorders. Intracerebral potentials to rare target and distractor auditory and visual stimuli. Medial, lateral and posterior temporal lobe. Electroencephalography and Clinical Neurophysiology.
Feasibility of the homogeneous head model in the interpretation of neuromagnetic fields. Physics in Medicine and Biology.
Responses of the primary auditory cortex to pitch changes in a sequence of tone pips: Neuromagnetic recordings in man.
Neuroscience Letters. Cortico-cortical phase synchrony in auditory mismatch processing. Biological Psychology. Strengthening of top-down frontal cognitive control networks underlying the development of inhibitory control: A functional magnetic resonance imaging effective connectivity study. Journal of Neuroscience. Involvement of the dorsolateral prefrontal cortex of monkeys in visuospatial target selection.
Journal of Neurophysiology. Atypical coordination of cortical oscillations in response to speech in autism. Top-down control-signal dynamics in anterior cingulate and prefrontal cortex neurons following task switching. Cortical activation and synchronization during sentence comprehension in high-functioning autism: Evidence of underconnectivity.
Delayed automatic detection of change in speech sounds in adults with autism: A magnetoencephalographic study. Kaufman brief intelligence test. Disconnectivity of the cortical ocular motor control network in autism spectrum disorders. Long-range reduced predictive information transfers of autistic youths in EEG sensor-space during face processing.
Brain Topography. Local and long-range functional connectivity is reduced in concert in autism spectrum disorders. Somato-sensory cortex functional connectivity abnormalities in autism show opposite trends, depending on direction and spatial scale.
Altered development and multifaceted band-specific abnormalities of resting state networks in autism. Biological Psychiatry. The effect of different noise types on the speech and non-speech elicited mismatch negativity. Hearing Research. Human auditory-cortex mechanisms of preattentive sound discrimination.
The neural basis of aberrant speech and audition in autism spectrum disorders. Neuroscience and Biobehavioral Reviews. Auditory stream segregation in children with Asperger syndrome. The discrimination of and orienting to speech and non-speech sounds in children with autism. Brain Research. Deviant auditory stimuli activate human left and right auditory cortex differently. Intracranial identification of an electric frontal-cortex response to auditory stimulus change: A case study.
Cognitive Brain Research. Distributed current estimates using cortical orientation constraints. When seeing depends on knowing: Adults with Autism Spectrum Conditions show diminished top-down processes in the visual perception of degraded faces but not degraded objects. Temporo-frontal phase synchronization supports hierarchical network for mismatch negativity.
Localizing pre-attentive auditory memory-based comparison: Magnetic mismatch negativity to pitch change. Journal of Neuroscience Methods. Nonparametric statistical testing of coherence differences. Increased intra-participant variability in children with autistic spectrum disorders: Evidence from single-trial analysis of evoked EEG.
Frontiers in Psychology. Susceptibility to the Shepard illusion in participants with autism: Reduced top-down influences within perception? Autism Research. Speech and language in autism spectrum disorder: A view through the lens of behavior and brain imaging. The intensity of masking noise affects the mismatch negativity to speech sounds in human subjects. Mismatch negativity — A unique measure of sensory processing in audition.
International Journal of Neuroscience. The mismatch negativity MMN in basic research of central auditory processing: A review. We repeated the paradigm twice, once in a quiet background, and once in the presence of background noise.
We focused on both the evoked mismatch field MMF response in temporal and frontal cortical locations, and functional connectivity with spectral specificity between those locations. In the quiet condition, we found common neural sources of the MMF response in both groups, in the right temporal gyrus and inferior frontal gyrus IFG.
Konstantinos P. Ann E. Hickox Akouos, Inc. Purdue University. Proceedings of the National Academy of Sciences 37 , , The Journal of the Acoustical Society of America 1 , , The Journal of the Acoustical Society of America 3 , ,
0コメント