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Border ownership selectivity in human early visual cortex and its modulation by attention
(Society for Neuroscience, 2009)
Natural images are usually cluttered because objects occlude one another. A critical aspect of recognizing these visual objects is to identify the borders between image regions that belong to different objects. However, ...
Caloric restriction eliminates the aging-related decline in NMDA and AMPA receptor subunits in the rat hippocampus and induces homeostasis
(ElsevierAysel Sabuncu Brain Research Center (BAM), 2007)
Caloric restriction (CR) extends life span and ameliorates the aging-related decline in hippocampal-dependent cognitive function. In the present study, we compared subunit levels of NMDA and AMPA types of the glutamate ...
Spatial learning and memory deficits after whole-brain irradiation are associated with changes in nmda receptor subunits in the hippocampus
(Radiation Research Society., 2006)
Whole-brain irradiation is used for the treatment of brain tumors, but can it also induce neural changes, with progressive dementia occurring in 20–50% of long-term survivors. The present study investigated whether 45 Gy ...
Functional characterization of Des-IGF-1 action at excitatory synapses in the CA1 region of rat hippocampus
(American Physiological Society, 2005)
Insulin-like growth factor-1 (IGF-1) and growth hormone play a major role in the growth and development of tissues throughout the mammalian body. Plasma IGF-1 concentrations peak during puberty and decline with age. We ...
Attention-dependent representation of a size illusion in human V1
(Cell Press, 2008)
One of the most fundamental properties of human primary visual cortex (V1) is its retinotopic organization, which makes it an ideal candidate for encoding spatial properties, such as size, of objects. However, three-dimensional ...
Estrogen and aging affect synaptic distribution of phosphorylated LIM kinase (pLIMK) in CA1 region of female rat hippocampus
(Elsevier, 2008)
17β-Estradiol (E) increases axospinous synapse density in the hippocampal CA1 region of young female rats, but not in aged rats. This may be linked to age-related alterations in signaling pathways activated by synaptic ...
Distinct perceptual grouping pathways revealed by temporal carriers and envelopes
(Association for Research in Vision and Ophthalmology, 2008)
S. E. Guttman, L. A. Gilroy, and R. Blake (2005) investigated whether observers could perform temporal grouping in multi-element displays where each local element was stochastically modulated over time along one of several ...
Stability of local brain levels of insulin-like growth factor-I in two well-characterized models of decreased plasma IGF-I
(Taylor & Francis, 2009)
Insulin-like growth factor-I (IGF-I), a functionally important neurotrophic factor, impacts tissues throughout the body including the central nervous system. In addition to the significant proportion of IGF-I that is ...
Metacontrast masking and stimulus contrast polarity
(Elsevier, 2008)
A recent report [Becker, M. W., & Anstis S. (2004). Metacontrast masking is specific to luminance polarity. Vision Research, 44, 2537–2543] of a failure to obtain metacontrast with target and mask stimuli of opposite ...
Full‐brain coverage and high‐resolution imaging capabilities of passband b‐SSFP fMRI at 3T
(Wiley‐Liss, Inc., 2008)
Passband balanced-steady-state free precession (b-SSFP)fMRI is a recently developed method that utilizes the passband(flat portion) of the b-SSFP off-resonance response to measureMR signal changes elicited by changes in ...