![]() ![]() It suggests a massive loss of non-selected information from V1 downstream along the visual pathway. This motivates a new framework that views vision as consisting of encoding, selection, and decoding stages, placing selection on center stage. Selection starts in the primary visual cortex (V1), which creates a bottom-up saliency map to guide the fovea to selected visual locations via gaze shifts. Visual attention selects only a tiny fraction of visual input information for further processing. ![]() Zhaoping Li Max Planck Institute for Biological Cybernetics, Tübingen, Germany Correspondence: Zhaoping Li Neuroscience 2020, 21(Suppl 1):K2 I’ll provide a high-level introduction to deep RL, discuss some recent neuroscience-oriented investigations from my group at DeepMind, and survey some wider implications for research on brain and behavior. Deep RL offers a rich framework for studying the interplay among learning, representation and decision-making, offering to the brain sciences a new set of research tools and a wide range of novel hypotheses. However, there is another area of recent AI work which has so far received less attention from neuroscientists, but which may have more profound neuroscientific implications: deep reinforcement learning. ![]() What implications might these have for neuroscience? Investigations of this question have, to date, focused largely on deep neural networks trained using supervised learning, in tasks such as image classification. The last few years have seen some dramatic developments in artificial intelligence research. The structures of the limbic system are ideally located to regulate the impact of primary sensory processing in one brain area on the construction of higher order mental processes in other areas.Matthew Botvinick Google DeepMind, Neuroscience Research, London, United Kingdom Correspondence: Matthew Botvinick Neuroscience 2020, 21(Suppl 1):K1 Later the limbic system was expanded to include the septal area, the nucleus accumbens, the orbitofrontal and anterior temporal cortex, the dorsomedial thalamic nuclei and the amigdala. The higher cortical regions could thus influence the hypothalamus and vice versa. The mamillary bodies then project to the anterior thalamic nuclei, which project back to the cingulate gyrus and then to wide areas of the cortex. He proposed a circuit in which the cortex connects to the cingulate gyrus, which connects to the hippocampus, which in turn connects to the mamillary bodies (hypothalamus) through the fornix. Observing that the hypothalamus played a significant role in the expression of emotion and that higher cognitive function and thought arose from activity in the cortical areas, specifically the frontal lobes, Papez subjectively reasoned that because emotion could be influenced by thought and thought could be influenced by emotion the hypothalamus (emotion) must reciprocally connect with higher cortical areas (thought). Papez 9, was the first to suggest the concept that a circuit of specific brain structures could be responsible for human emotion. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |