نتایج جستجو برای: evoked response variability

تعداد نتایج: 1164419  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Mariel G Kozberg Brenda R Chen Sarah E DeLeo Matthew B Bouchard Elizabeth M C Hillman

The adult brain exhibits a local increase in cortical blood flow in response to external stimulus. However, broadly varying hemodynamic responses in the brains of newborn and young infants have been reported. Particular controversy exists over whether the "true" neonatal response to stimulation consists of a decrease or an increase in local deoxyhemoglobin, corresponding to a positive (adult-li...

Journal: :Visual neuroscience 1998
W Bair L P O'Keefe

We analyzed the relationship between eye movements and neuronal responses recorded from area MT in alert monkeys trained to maintain visual fixation during the presentation of moving patterns. The monkeys made small saccades which moved the eyes with velocities that spanned the sensitivity range of MT neurons. The saccades evoked changes in the neuronal response that depended upon (1) the level...

Journal: :The Annals of otology, rhinology, and laryngology 1989
K T Kavanagh R Franks

This study compared the filtering effects on the auditory evoked potential of zero and standard phase shift digital filters (the former was a mathematical approximation of a standard Butterworth filter). Conventional filters were found to decrease the height of the evoked response in the majority of waveforms compared to zero phase shift filters. A 36-dB/octave zero phase shift high pass filter...

2011
Theodore M. Bartoletti Wallace B. Thoreson

PURPOSE Vision is encoded at photoreceptor synapses by the number of released vesicles and size of the post-synaptic response. We hypothesized that elevating cytosolic glutamate could enhance quantal size by increasing glutamate in vesicles. METHODS We introduced glutamate (10-40 mM) into cone terminals through a patch pipette and recorded excitatory post-synaptic currents (EPSCs) from horizo...

Journal: :Schizophrenia research 2016
Sarah M Haigh Akshat Gupta Scott M Barb Summer A F Glass Nancy J Minshew Ilan Dinstein David J Heeger Shaun M Eack Marlene Behrmann

Autism and schizophrenia share multiple phenotypic and genotypic markers, and there is ongoing debate regarding the relationship of these two disorders. To examine whether cortical dynamics are similar across these disorders, we directly compared fMRI responses to visual, somatosensory and auditory stimuli in adults with autism (N=15), with schizophrenia (N=15), and matched controls (N=15). All...

2017
O. Parker Jones N.L. Voets J.E. Adcock R. Stacey S. Jbabdi

Injury and disease affect neural processing and increase individual variations in patients when compared with healthy controls. Understanding this increased variability is critical for identifying the anatomical location of eloquent brain areas for pre-surgical planning. Here we show that precise and reliable language maps can be inferred in patient populations from resting scans of idle brain ...

2015
Peter A. Appleby Saqib Shabir Jennifer Southgate Dawn Walker

Epithelial tissue structure is the emergent outcome of the interactions between large numbers of individual cells. Experimental cell biology offers an important tool to unravel these complex interactions, but current methods of analysis tend to be limited to mean field approaches or representation by selected subsets of cells. This may result in bias towards cells that respond in a particular w...

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