Results 21 to 30 of about 379,044 (301)

Primary Motor Cortex Involvement in Alzheimer Disease [PDF]

Journal of Neuropathology and Experimental Neurology, 1999
In Alzheimer disease (AD) the involvement of entorhinal cortex, hippocampus, and associative cortical areas is well established. Regarding the involvement of the primary motor cortex the reported data are contradictory. In order to determine whether the primary motor cortex is involved in AD, the brains of 29 autopsy cases were studied, including, 17 ...
D, Suvà, I, Favre, R, Kraftsik, M, Esteban, A, Lobrinus, J, Miklossy   +5 more
openaire   +2 more sources

Partially Overlapping Sensorimotor Networks Underlie Speech Praxis and Verbal Short-Term Memory: Evidence from Apraxia of Speech Following Acute Stroke

Frontiers in Human Neuroscience, 2014
We tested the hypothesis that motor planning and programming of speech articulation and verbal short-term memory (vSTM) depend on partially overlapping networks of neural regions. We evaluated this proposal by testing 76 individuals with acute ischemic
Gregory eHickok, Corianne eRogalsky, Rong eChen, Edward H. Herskovits, Sarah eTownsley, Argye eHillis, Argye eHillis   +6 more
doaj   +1 more source

Changes in excitability and GABAergic neuronal activity of the primary somatosensory cortex after motor learning

Frontiers in Neuroscience, 2022
IntroductionIt is widely known that motor learning changes the excitability of the primary motor cortex. More recently, it has been shown that the primary somatosensory cortex (S1) also plays an important role in motor learning, but the details have not ...
Manh Van Pham, Kei Saito, Kei Saito, Shota Miyaguchi, Shota Miyaguchi, Hiraku Watanabe, Hiraku Watanabe, Hiraku Watanabe, Hitomi Ikarashi, Hitomi Ikarashi, Kazuaki Nagasaka, Kazuaki Nagasaka, Hirotake Yokota, Hirotake Yokota, Sho Kojima, Sho Kojima, Yasuto Inukai, Yasuto Inukai, Naofumi Otsuru, Naofumi Otsuru, Hideaki Onishi, Hideaki Onishi   +21 more
doaj   +1 more source

Attention-dependent modulation of neural activity in primary sensorimotor cortex [PDF]

, 2013
Although motor tasks at most times do not require much attention, there are findings that attention can alter neuronal activity not only in higher motor areas but also within the primary sensorimotor cortex.
Milnik, Annette, Müller, Notger Germar, Nowak, Isabella   +2 more
core   +1 more source

Neuronal Plasticity and Age-Related Functional Decline in the Motor Cortex

Cells, 2023
Physiological aging causes a decline of motor function due to impairment of motor cortex function, losses of motor neurons and neuromuscular junctions, sarcopenia, and frailty.
Ritsuko Inoue, Hiroshi Nishimune
doaj   +1 more source

Motor recovery following capsular stroke [PDF]

, 1993
The functional anatomy of motor recovery was studied by assessing motor function quantitatively in 23 patients following capsular or striatocapsular stroke.
Danek, Adrian, Fries, Wolfgang, Hamburger, C., Scheidtmann, K.   +3 more
core   +1 more source

Movement Decomposition in the Primary Motor Cortex [PDF]

Cerebral Cortex, 2018
Abstract A complex action can be described as the composition of a set of elementary movements. While both kinematic and dynamic elements have been proposed to compose complex actions, the structure of movement decomposition and its neural representation remain unknown.
Naama, Kadmon Harpaz, David, Ungarish, Nicholas G, Hatsopoulos, Tamar, Flash   +3 more
openaire   +2 more sources

Analysis of Time-Dependent Brain Network on Active and MI Tasks for Chronic Stroke Patients.

PLoS ONE, 2015
Several researchers have analyzed brain activities by investigating brain networks. However, there is a lack of the research on the temporal characteristics of the brain network during a stroke by EEG and the comparative studies between motor execution ...
Da-Hye Kim, Leahyun Kim, Wanjoo Park, Won Hyuk Chang, Yun-Hee Kim, Seong-Whan Lee, Gyu Hyun Kwon   +6 more
doaj   +1 more source

Preconditioning of low-frequency repetitive transcranial magnetic stimulation with transcranial direct current stimulation: evidence for homeostatic plasticity in the human motor cortex [PDF]

, 2004
Recent experimental work in animals has emphasized the importance of homeostatic plasticity as a means of stabilizing the properties of neuronal circuits. Here, we report a phenomenon that indicates a homeostatic pattern of cortical plasticity in healthy
Lang, N., Lemon, R.N., Nitsche, M.A., Paulus, W., Rizzo, V., Rothwell, J.C., Siebner, H.R.   +6 more
core   +1 more source

Spontaneous activity patterns in human motor cortex replay evoked activity patterns for hand movements

Scientific Reports, 2022
Spontaneous brain activity, measured with resting state fMRI (R-fMRI), is correlated among regions that are co-activated by behavioral tasks. It is unclear, however, whether spatial patterns of spontaneous activity within a cortical region correspond to ...
Tomer Livne, DoHyun Kim, Nicholas V. Metcalf, Lu Zhang, Lorenzo Pini, Gordon L. Shulman, Maurizio Corbetta   +6 more
doaj   +1 more source