The organization of the human cerebral cortex estimated by intrinsic functional connectivity Tập 106 Số 3 - Trang 1125-1165 - 2011
B.T. Thomas Yeo, Fenna M. Krienen, Jorge Sepulcre, Mert R. Sabuncu, Danial Lashkari, Marisa O. Hollinshead, Joshua L. Roffman, Jordan W. Smoller, Lilla Zöllei, Jonathan R. Polimeni, Bruce Fischl, Hesheng Liu, Randy L. Buckner
Information processing in the cerebral cortex involves interactions among distributed areas. Anatomical connectivity suggests that certain areas form local hierarchical relations such as within the visual system. Other connectivity patterns, particularly among association areas, suggest the presence of large-scale circuits without clear hierarchical relations. In this study the organizati...... hiện toàn bộ Tín hiệu Phần thưởng Dự đoán của Các Nơron Dopamine Dịch bởi AI Tập 80 Số 1 - Trang 1-27 - 1998
Wolfram Schultz
Schultz, Wolfram. Tín hiệu phần thưởng dự đoán của các nơron dopamine. J. Neurophysiol. 80: 1–27, 1998. Các tác động của tổn thương, chặn thụ thể, tự kích thích điện, và các loại thuốc gây nghiện cho thấy rằng các hệ thống dopamine ở giữa não có liên quan đến việc xử lý thông tin phần thưởng và học hỏi hành vi tiếp cận. Hầu hết các nơron dopamine thể hiện sự kích hoạt pha sau các phần thưở...... hiện toàn bộ Mnemonic coding of visual space in the monkey's dorsolateral prefrontal cortex Tập 61 Số 2 - Trang 331-349 - 1989
Shintaro Funahashi, Charles J. Bruce, Patricia S. Goldman‐Rakic
1. An oculomotor delayed-response task was used to examine the spatial memory functions of neurons in primate prefrontal cortex. Monkeys were trained to fixate a central spot during a brief presentation (0.5 s) of a peripheral cue and throughout a subsequent delay period (1-6 s), and then, upon the extinction of the fixation target, to make a saccadic eye movement to where the cue had bee...... hiện toàn bộ Central programming of postural movements: adaptation to altered support-surface configurations Tập 55 Số 6 - Trang 1369-1381 - 1986
Fay B. Horak, Lewis M. Nashner
We studied the extent to which automatic postural actions in standing human subjects are organized by a limited repertoire of central motor programs. Subjects stood on support surfaces of various lengths, which forced them to adopt different postural movement strategies to compensate for the same external perturbations. We assessed whether a continuum or a limited set of muscle activation...... hiện toàn bộ Motor facilitation during action observation: a magnetic stimulation study Tập 73 Số 6 - Trang 2608-2611 - 1995
Luciano Fadiga, Leonardo Fogassi, Giovanni Pavesi, Luigi Cattaneo
1. We stimulated the motor cortex of normal subjects (transcranial magnetic stimulation) while they 1) observed an experimenter grasping 3D-objects, 2) looked at the same 3D-objects, 3) observed an experimenter tracing geometrical figures in the air with his arm, and 4) detected the dimming of a light. Motor evoked potentials (MEPs) were recorded from hand muscles. 2. We found that MEPs s...... hiện toàn bộ Posterior parietal association cortex of the monkey: command functions for operations within extrapersonal space Tập 38 Số 4 - Trang 871-908 - 1975
Vernon B. Mountcastle, James C. Lynch, Angeliki Georgopoulos, Hideo Sakata, Carlos Acuña
Experiments were made on the posterior parietal association cortical areas 5 and in 17 hemispheres of 11 monkeys, 6 M. mulatta and 5 M. arctoides. The electrical signs of the activity of single cortical cells were recorded with microelectrodes in waking animals as they carried out certain behavioral acts in response to a series of sensory cues. The behavioral paradigms were one for detect...... hiện toàn bộ Comparative electrophysiology of pyramidal and sparsely spiny stellate neurons of the neocortex Tập 54 Số 4 - Trang 782-806 - 1985
David A. McCormick, Barry W. Connors, James W. Lighthall, D. A. Prince
Slices of sensorimotor and anterior cingulate cortex from guinea pigs were maintained in vitro and bathed in a normal physiological medium. Electrophysiological properties of neurons were assessed with intracellular recording techniques. Some neurons were identified morphologically by intracellular injection of the fluorescent dye Lucifer yellow CH. Three distinct neuronal classes of elec...... hiện toàn bộ