Results 31 to 40 of about 6,807 (176)

Magnocellular and parvocellular influences on reflexive attention

Vision Research, 2011
Previous studies have provided conflicting evidence regarding whether the magnocellular (M) or parvocellular (P) visual pathway is primarily responsible for triggering involuntary orienting. Here, we used event-related potentials (ERPs) to provide new evidence that both the M and P pathways can trigger attentional capture and bias visual processing at ...
Ries, Anthony J., Hopfinger, Joseph B.
openaire   +2 more sources

Further Examination of the Pulsed- and Steady-Pedestal Paradigms under Hypothetical Parvocellular- and Magnocellular-Biased Conditions

Vision
The pulsed- and steady-pedestal paradigms were designed to track increment thresholds (ΔC) as a function of pedestal contrast (C) for the parvocellular (P) and magnocellular (M) systems, respectively.
Jaeseon Song, Bruno G. Breitmeyer, James M. Brown   +2 more
doaj   +1 more source

Flicker adaptation desensitizes the magnocellular but not the parvocellular pathway

Journal of Vision, 2014
Anatomical and physiological studies show that in primates, visual information is conveyed through two parallel pathways, including the magnocellular (MC-) and parvocellular (PC-) pathways. However, the functional separation between the two pathways remains controversial and challenging. To resolve this, we show a psychophysical approach to desensitize
Xiaohua, Zhuang, Joel, Pokorny, Dingcai, Cao   +2 more
openaire   +2 more sources

Leptin activates oxytocin neurons of the hypothalamic paraventricular nucleus in both control and diet-induced obese rodents. [PDF]

PLoS ONE, 2013
The adipocyte-derived hormone leptin acts in the brain to reduce body weight and fat mass. Recent studies suggest that parvocellular oxytocin (OXT) neurons of the hypothalamic paraventricular nucleus (PVN) can mediate body weight reduction through ...
Mario Perello, Jesica Raingo
doaj   +1 more source

Optic Neuritis: From Magnocellular to Cognitive Residual Dysfunction

Behavioural Neurology, 2013
Optic Neuritis (ON) has been associated to both parvocellular dysfunction and to an alteration of the magnocellular pathway. After objective visual field and acuity recovery, ON patients may complain about their vision suggesting a residual subclinical ...
Anne-Claire Viret, Céline Cavézian, Olivier Coubard, Vivien Vasseur, Noa Raz, Netta Levin, Catherine Vignal, Olivier Gout, Sylvie Chokron   +8 more
doaj   +1 more source

Layer-specific fMRI reflects different neuronal computations at different depths in human V1. [PDF]

PLoS ONE, 2012
Recent work has established that cerebral blood flow is regulated at a spatial scale that can be resolved by high field fMRI to show cortical columns in humans.
Cheryl A Olman, Noam Harel, David A Feinberg, Sheng He, Peng Zhang, Kamil Ugurbil, Essa Yacoub   +6 more
doaj   +1 more source

Consequence of the magnocellular dysfunction on processing facial affect recognition in Schizophrenia

European Psychiatry, 2022
Introduction Magnocellular deficit in visual perception and impaired emotion recognition are core features of schizophrenia, however their relationship and the neurobiological underpinnings are still unclear.
C. Marosi, Z. Fodor, G. Csukly
doaj   +1 more source

Magno- and Parvocellular Contrast Responses in Varying Degrees of Autistic Trait. [PDF]

PLoS ONE, 2013
Autistic tendency has been associated with altered visual perception, especially impaired visual motion sensitivity and global/local integration, as well as enhanced visual search and local shape recognition.
Brianna L Jackson, Ellie M Blackwood, Julieanne Blum, Sean P Carruthers, Sabrina Nemorin, Brett A Pryor, Shannon D Sceneay, Stephanie Bevan, David P Crewther   +8 more
doaj   +1 more source

Real‐world outcomes of responsive neurostimulation in patients with Lennox–Gastaut syndrome: A multicenter retrospective study

Epilepsia Open, EarlyView.
Abstract Objective Lennox–Gastaut syndrome (LGS) is a severe developmental and epileptic encephalopathy (DEE) characterized by multiple seizure types and high resistance to antiseizure medication (ASM), often necessitating nonpharmacologic therapies, including neuromodulation.
Shanna M. Swartwood, Robert J. Bollo, Catherine J. Chu, Alexandra L. Geffrey, Robert Mark Richardson, Hiroki Nariai, Aria Fallah, Samuel Ahn, Saadi Ghatan, Laura Chenevert, Maite La Vega‐Talbott, Audie C. Espinoza   +11 more
wiley   +1 more source

mTORC1 and CB1 receptor signaling regulate excitatory glutamatergic inputs onto the hypothalamic paraventricular nucleus in response to energy availability

Molecular Metabolism, 2019
Objective: The hypothalamic paraventricular nucleus (PVN) is a key target of the melanocortin system, which orchestrates behavioral and metabolic responses depending on energy availability.
Wilfrid Mazier, Nicolas Saucisse, Vincent Simon, Astrid Cannich, Giovanni Marsicano, Federico Massa, Daniela Cota   +6 more
doaj   +1 more source