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Neural Synchrony of Spiking Local Neurons and Local Field Potential Activities in Primary Visual Cortex of Awake Monkeys

Masoudian, Saeed | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52083 (19)
  4. University: Sharif University of Technology
  5. Department: Computer Engineering
  6. Advisor(s): Jafari, Mehdi; Rabiee, Hamid Reza; Lashgari, Reza
  7. Abstract:
  8. Primary visual cortex plays a paramount role in processing visual information. Visual information after the primitive processing by LGN and Thalamus, will be sent to the primary visual cortex which is called V1 area. According to the fact that V1 neurons have the definitive sensitivity to the edge and contrast of visual stimuli so their behavior are very selective to the certain features, specially contrast, of visual stimuli. These neurons have different response behavior to contrast. In fact most of them have some nonlinear behavior to this feature. Normally we expect that response of them or spiking rate of them grow linearly by the contrast increases but in most many cases they have some level of saturation or supersaturation in their responses. In this thesis firstly we investigate on the kinds of models in responses of V1 neurons to contrast. Furthermore we try to recognize these response classes by certain features of neurons. Finally we start to analyze these behaviors from the micro activity of neurons. In this study we use two measures which are well known in this field of study. these measure are LFP and Spike activity which they use for analysis based on Single Unit Activity and Multi Unit Activity respectively. In order to analyze these measures we will use some methods based on Information Theory, Frequency Analysis and Machine learning
  9. Keywords:
  10. Neural Synchrong ; Primary Visual Cortex ; Local Field Potential ; Supersaturation

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