Papers for the month of April 2019


Murty, V. P., Tervo-Clemmens, B., Foran, W., Luna, B.

"Age-Associated Deviations of Amygdala Functional Connectivity in Youths With Psychosis Spectrum Disorders: Relevance to Psychotic Symptoms."
The American Journal of Psychiatry, 176:196

Mouse over here for a brief summary or click to open article in a new tab.The authors created normative growth charts of amygdala functional connectivity in typically developing youths, assessed age-associated deviations of these trajectories in youths with psychosis spectrum disorders, and explored how these disruptions are related to clinical symptomatology.


Freedman, D., Hegarty, C. E., Menningen, E., Karlsgodt, K. H., Olde Loohuis, L. M., Ophoff, R. A., Gur, R. E., Bearden, C. E.

"Structural Brain Alterations in Youth With Psychosis and Bipolar Spectrum Symptoms"
Journal of the American Academy of Child & Adolescent Psychiatry, 2019:1

Mouse over here for a brief summary or click to open article in a new tab.Adults with established diagnoses of serious mental illness (bipolar disorder and schizophrenia) exhibit structural brain abnormalities, yet less is known about how such abnormalities manifest earlier in development. The authors examined publicly-available structural magnetic resonance imaging data from adolescent youths to determine whether those on the psychosis spectrum exhibited structural differences from those who were not on the spectrum; they discovered that relatively decreased cortical surface area and thalamic volume were present in these youths.


Parekh, P., Logan, R., Ketchesin, K., Becker-Krail, D., Shelton, M., Hildebrand, M., Barko, K., Huang, Y., McClung, C.

"Cell-type specific regulation of nucleus accumbens synaptic plasticity and cocaine reward sensitivity by the circadian protein, NPAS2"
The Journal of Neuroscience , 2233:2233

Mouse over here for a brief summary or click to open article in a new tab.Disruptions of the circadian clock can predispose or exacerbate substance abuse in vulnerable individuals. We demonstrate a role for the core circadian protein, NPAS2, in mediating glutamatergic neurotransmission at medium spiny neurons (MSNs) in the nucleus accumbens (NAc), a region critical for reward processing.


Gurnsey, Kate

"Formation and decay of auditory short-term memory in the macaque monkeyo"
Journal of Neurophysiology, in press:1

Mouse over here for a brief summary or click to open article in a new tab.This is the first detailed quantification of the rapid temporal dynamics of auditory short-term memory in the rhesus. Much of the auditory information in short-term memory is lost within the first couple of seconds. Repeated presentations of a tone strengthen its encoding into short-term memory. Model-based analyses suggest two distinct components: an echoic memory-homolog that mediates the rapid decay, and a more stable but less detail-rich component that mediates strengthening of the trace with repetition.


Rice, Caitlin; Fraundorf, Scott, Liburd, Teljer

"The complex interactions of context availability, polysemy, word frequency, and orthographic variables during lexical processing"
Memory & Cognition, 1:1-17

Mouse over here for a brief summary or click to open article in a new tab.In this study we examined the interactions of context availability, polysemy, word frequency, and orthographic neighborhood variables during lexical processing. Context availability and polysemy interacted, in that words that were both lower in context availability and had fewer related senses were especially disadvantaged. Word frequency interacted with both polysemy and context availability, and orthographic neighborhood size and frequency both interacted with polysemy. We discuss the nature of these interactions and the theoretical implications for models of lexical processing.


Iturralde, Pablo

"Corrective Muscle Activity Reveals Subject-Specific Sensorimotor Recalibration"
eNeuro, 6:2

Mouse over here for a brief summary or click to open article in a new tab.We studied changes in muscle activity across sudden transitions in walking conditions. We show that following prolonged exposure to a novel environment, returning to normal walking elicits the same types of responses as does the initial introduction of a novel environment.

Archive:

  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013