CODING OF BRAIN STATES (AND PERCEIVED OBJECTS) IN TERMS OF CORTICAL SIGNALS

  • Encoding

project2_encoding&decodingHow different visual features in a given dimension are coded in the brain is a principal question in systems neuroscience. Emerging evidence show that single neurons in sensory areas of the cortex are capable of coding visual features to some extent. However how neighboring populations of neurons contribute to the coding problem remains unclear. We use different state of the art probabilistic pattern recognition algorithms to reveal the coding scheme that neural populations are involved in.

  • Decoding

Brain signals can be used to decode the cognitive state as well as the perceived concept by the subject. This decoding will help us create brain-machine interfaces (BCIs) and also let us know how information is coded and processed in the neural system. Our projects in this regard are twofold; at sensory level we investigate whether perceived visual features can be decoded using neural activities recorded in the form of electrophysiological signals recorded from vertical areas of macaque monkeys. On the other hand we study if cognitive states such as where the subject is attending can be revealed using only the electrical signals. We use data recorded from different brain areas of macaque monkeys and exploit variety of modern machine learning algorithms to solve these problems.

Events

News

  • unnamed

    Mini-symposium Held at IUST

    In July, 2017 we held a one-day mini-symposium at IUST, for the interchange of scientific expertise and findings between different projects of the our lab and external collaborating teams. The lectures were organized in two panels: Invited talks (given by principle investigators cooperating with our lab) and Project presentations (delivered by PhD students). Topics ranging all the way from the dynamics of neural coding in primate brain to computational approaches in modeling the neural system were covered through these lectures. Importantly we had the honor to host Dr. Fatemeh Bakouie (Shahid Beheshti University), Dr. Zeinab Fazlali (IPM School of Cognitive Sciences), Prof. Dr. Shahriyar Gharibzadeh (Amirkabir University of Technology) and Dr. Marzieh Zare (IPM School of Computer Sciences), to present their ongoing research lines in the symposium.
  • 20160914_192500

    The surgery center has been launched in the Cognitive Neurobiology Lab

    We are pleased to announce that on Sep 2016, we launched a non-human primate surgery center in IPM School of Cognitive Sciences. The surgery room is equipped with the most modern equipment enabling primate neuroscientists to carry out the most sophisticated brain surgeries. These surgeries are aimed at implanting either fixation or neural implants. Facilities such as accurate human-level monitoring and anesthesia systems enable us to carry out surgeries with the highest standards of animal welfare.
  • F. Zareayan’s winning support to attend FENS 2016

    Fatemeh Zareayan won the prize to attend the 10th Forum of Neuroscience Conference to be held in Copenhagen July 2-6, 2016 from the Iranian Cognitive Sciences and Technologies Council

  • PhD defence

    "Moein Esghaei successfully defended his thesis at IPM. His thesis addressed the role of low frequency oscillatory activities of brain in the process of selective attention."