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Unveiling Hidden Neural Codes: SIMPL – A Scalable and Fast Approach for Optimizing Latent Variables and Tuning Curves in Neural Population Data

Dr. Rishabh Pathak
This research paper presents SIMPL (Scalable Iterative Maximization of Population-coded Latents), a novel, computationally efficient algorithm designed to refine the estimation of latent variables and tuning curves from neural population activity. Latent variables in neural data represent essential low-dimensional quantities encoding behavioral or cognitive states, which neuroscientists seek to identify to understand brain computations better. Background and Motivation Traditional approaches commonly assume the observed behavioral variable as the latent neural code. However, this assumption can lead to inaccuracies because neural activity sometimes encodes internal cognitive states differing subtly from observable behavior (e.g., anticipation, mental simulation). Existing latent variable models face challenges such as high computational cost, poor scalability to large datasets, limited expressiveness of tuning models, or difficulties interpreting complex neural network-based functio...
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Greek Contribution to Neuroscience -from Alkmaion to Economs

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Dr. Rishabh Pathak

Greek contributions to neuroscience have been significant throughout history, with notable figures making pioneering advancements in understanding the brain and nervous system. Here are some key Greek contributors to neuroscience from ancient times to the modern era:


1.      Alcmaeon of Croton (5th century BC): Alcmaeon is considered one of the earliest Greek philosophers and physicians who made important contributions to the field of neuroscience. He is credited with being one of the first to recognize the brain as the seat of intelligence and to study the optic nerve.


2. Hippocrates (460-370 BC): Known as the "Father of Medicine," Hippocrates was an ancient Greek physician whose work laid the foundation for modern medicine. He emphasized the importance of observing and recording symptoms of diseases, including those affecting the nervous system.


3.     Galen (129-200 AD): Galen, a prominent Greek physician in the Roman Empire, made significant contributions to anatomy and physiology. He conducted extensive dissections of animals and described the structure and functions of the brain and spinal cord.


4.    Constantine Economos (20th century): Constantine Economos was a Greek neuroscientist known for his research on the neurophysiology of vision. He made important contributions to understanding the visual system and how the brain processes visual information.


These Greek figures, among others, have played a crucial role in shaping our understanding of neuroscience over the centuries. Their work has laid the groundwork for modern neuroscience research and continues to inspire advancements in the field today.


It is important to recognize and appreciate the contributions of these Greek scholars to the field of neuroscience, as their insights and discoveries have had a lasting impact on our understanding of the brain and nervous system.

 

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