Results 301 to 310 of about 126,420 (329)

Focal posterior cingulate atrophy in incipient Alzheimer's disease

Neurobiology of Aging, 2010
Severe posterior cingulate cortex hypometabolism is a feature of incipient, sporadic Alzheimer's disease (AD). The aim was to test the hypothesis that this region is focally atrophic in very early disease by studying AD patients at the mild cognitive impairment (MCI) stage, and, if so, to determine whether the amount of atrophy was comparable to that ...
Pengas, George, Hodges, John R., Watson, Peter, Nestor, Peter J.   +3 more
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Risk-sensitive neurons in macaque posterior cingulate cortex

Nature Neuroscience, 2005
People and animals often demonstrate strong attraction or aversion to options with uncertain or risky rewards, yet the neural substrate of subjective risk preferences has rarely been investigated. Here we show that monkeys systematically preferred the risky target in a visual gambling task in which they chose between two targets offering the same mean ...
Allison N, McCoy, Michael L, Platt
exaly   +3 more sources

Posterior cingulate cortical lesions eliminate learning-related unit activity in the anterior cingulate cortex

Brain Research, 1987
The frequency of multi-unit neuronal firing in response to tonal conditional stimuli increases, and the neuronal responses become discriminative in character, in the anterior and posterior subfields of the cingulate cortex (Brodmann's Area 24 and 29, respectively) during the course of discriminative avoidance conditioning in rabbits.
M, Gabriel, S, Sparenborg
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Pure Topographical Disorientation Due to Right Posterior Cingulate Lesion

Cortex, 1999
We report an 82-year-old woman who developed pure topographical disorientation after a cerebral infarction involving the isthmus of the right posterior cingulate gyrus. She lost her way in new environments such as the hospital, but not in old ones such as her own house.
K, Katayama, N, Takahashi, K, Ogawara, T, Hattori   +3 more
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Subicular projections to the posterior cingulate cortex in rats

Experimental Neurology, 1977
Abstract The subicular cortex and not Ammon's horn has been previously shown to receive afferents from the posterior cingulate cortex. Utilizing the techniques of horseradish peroxidase histochemistry and amino acid autoradiography we present evidence that in the rat the dorsal subicular cortex has a reciprocal connection with the posterior cingulate
R C, Meibach, A, Siegel
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Quantitative cytoarchitectonics of the posterior cingulate cortex in primates

Journal of Comparative Neurology, 1986
AbstractThe cytoarchitecture of four cortical areas within the posterior cingulate region and the differences among them are quantitatively analyzed in 17 primate species. The transition from allocortex (area 29) to isocortex (areas 30, 23, and 31) is characterized by shifts in laminar proportions and cellular densities.
K, Zilles, E, Armstrong, G, Schlaug, A, Schleicher   +3 more
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The posterior cingulate cortex: Insights from structure and function

2019
The posterior cingulate cortex (PCC) (Brodmann areas 23/31) is one of the least well-understood regions of the cortex. The PCC has very high levels of metabolic consumption, and network analyses of functional and structural data suggest it is a core hub in the human connectome; however, contemporary neuroscience lacks a clear account of its functional ...
Leech, Robert, Smallwood, Jonathan
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Kindling in the posterior cingulate cortex: electrographic and behavioral characteristics

Electroencephalography and Clinical Neurophysiology, 1990
Ictal, postictal and interictal electrical activities were recorded in the posterior cingulate cortex and hippocampus in the rat following kindling stimulations in the cingulate cortex. The afterdischarges (ADs) consisted of fast spikes and slow spike-and-wave of 2-5 Hz.
L S, Leung, K A, Boon
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Delayed atrophy in posterior cingulate cortex and apathy after stroke

International Journal of Geriatric Psychiatry, 2014
ObjectiveA few studies have been performed on chronic structural changes after stroke. The primary purpose of the present study was to investigate regional cortical volume changes after the onset of stroke and to examine how the cortical volume changes affected neuropsychiatric symptoms.MethodsParticipants were 20 stroke patients and 14 control ...
Kiwamu, Matsuoka, Fumihiko, Yasuno, Akihiko, Taguchi, Akihide, Yamamoto, Katsufumi, Kajimoto, Hiroaki, Kazui, Takashi, Kudo, Atsuo, Sekiyama, Soichiro, Kitamura, Kuniaki, Kiuchi, Jun, Kosaka, Toshifumi, Kishimoto, Hidehiro, Iida, Kazuyuki, Nagatsuka   +13 more
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Visual and Saccade-Related Activity in Macaque Posterior Cingulate Cortex

Journal of Neurophysiology, 2004
Previous neurophysiological studies have reported that neurons in posterior cingulate cortex (PCC) respond after eye movements, and that these responses may vary with ambient illumination. In monkeys, PCC neurons also respond after the illumination of large visual patterns but not after the illumination of small visual targets on either reflexive ...
Heather L, Dean, Justin C, Crowley, Michael L, Platt   +2 more
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