Skip to main content

Energy Manifold Natural Gradient Descent: From Riemannian Optimization to Modern Neuroscience, NeuroAI and Quantum Physics

Dr. Rishabh Pathak
When Geometry, Energy, Artificial Intelligence and Neuroscience Converge Modern Artificial Intelligence is rapidly moving beyond the idea that learning simply means minimizing an error function. Increasingly, researchers are asking a deeper question: what is the structure of the space in which learning takes place? This question becomes particularly important when the system being modelled is constrained, nonlinear, dynamic, or governed by physical principles. A recent work titled “Energy Manifold Natural Gradient Descent: Riemannian Optimization for Neural PDE Solvers” , by Zhangyong Liang and Huanhuan Gao, introduces Energy Manifold Natural Gradient Descent (EMNGD) , a mathematical framework that extends energy-based natural-gradient optimization from unconstrained Euclidean parameter spaces to constrained Riemannian parameter manifolds . At its core, the framework proposes a simple but powerful principle: An optimization algorithm should not only determine how to reduce error; it sh...
Post a Comment
Image
Dr. Rishabh Pathak

The Food and Drug Administration (FDA) is a regulatory agency within the United States Department of Health and Human Services responsible for protecting and promoting public health by ensuring the safety and efficacy of food, drugs, medical devices, cosmetics, and other products. Here is an overview of the FDA and its key functions:


1.      Regulatory Oversight:

o    The FDA regulates a wide range of products, including:

§  Food: Ensuring the safety and labeling of food products, dietary supplements, and additives.

§Drugs: Evaluating the safety, efficacy, and quality of pharmaceuticals for human use.

§  Medical Devices: Reviewing and approving medical devices to ensure their safety and effectiveness.

§  Biologics: Regulating biological products such as vaccines, blood products, and gene therapies.

§  Cosmetics: Monitoring the safety and labeling of cosmetic products.

§ Tobacco Products: Regulating the manufacturing, distribution, and marketing of tobacco products.

2.     Functions and Responsibilities:

o  Approval Process: The FDA reviews and approves new drugs, medical devices, and biologics through rigorous evaluation of clinical data to ensure their safety and efficacy before they can be marketed and sold to the public.

o Post-Market Surveillance: The FDA monitors products after approval to identify and address safety concerns, adverse events, and product recalls.

o  Labeling and Advertising: The FDA regulates the labeling and advertising of products to ensure accurate information is provided to consumers and healthcare professionals.

o  Inspections and Compliance: The FDA conducts inspections of manufacturing facilities to ensure compliance with regulatory standards and good manufacturing practices.

o  Public Health Education: The FDA provides information to the public about health risks, recalls, and regulatory actions to promote public health and safety.

3.     Drug Development Process:

o  The FDA plays a crucial role in the drug development process by reviewing investigational new drug applications (INDs), new drug applications (NDAs), and abbreviated new drug applications (ANDAs) submitted by pharmaceutical companies.

o  The FDA evaluates preclinical and clinical data to assess the safety and efficacy of new drugs, determining whether they can be approved for marketing and distribution.

4.    International Collaboration:

o    The FDA collaborates with regulatory agencies worldwide to promote global health and harmonize regulatory standards for products that are traded internationally.

oThrough initiatives like the International Conference on Harmonisation (ICH), the FDA works with international partners to streamline regulatory processes and facilitate the development of safe and effective products.

5.     Consumer Protection:

o    The FDA's primary mission is to protect and promote public health by ensuring the safety, efficacy, and security of products under its regulatory purview.

o  By setting and enforcing standards for product quality, manufacturing practices, and labeling, the FDA aims to safeguard consumers from potential health risks and fraudulent products.

In summary, the Food and Drug Administration (FDA) is a regulatory agency that plays a critical role in safeguarding public health by regulating the safety, efficacy, and quality of food, drugs, medical devices, and other products. Through its oversight, approval processes, post-market surveillance, and public health education efforts, the FDA works to ensure that products available to consumers meet established standards and contribute to the well-being of the population.



 

Categories:

Comments

Post a Comment

Popular posts from this blog

Cell Maturation (Dendrite and Axon Growth)

Dr. Rishabh Pathak
Cell maturation, encompassing dendrite and axon growth, is a crucial stage of brain development where neurons undergo structural changes to establish connections and form functional neural circuits. Here is an overview of cell maturation in the context of dendrite and axon growth: 1.      Dendrite Growth : o     Definition : Dendrites are branched extensions of a neuron that receive signals from other neurons and transmit these signals to the cell body. o     Dendritic Arborization : During maturation, neurons extend and elaborate their dendritic arbors, increasing the surface area available for synaptic connections. o     Synaptic Integration : Dendritic growth is essential for forming synapses with other neurons, allowing for the integration of incoming signals and information processing. o     Activity-Dependent Plasticity : Dendritic growth can be influenced by neural activity and sensory experiences, sh...
Post a Comment
Read more

Amphiarthrodial or Cartilaginous Joints

Dr. Rishabh Pathak
Amphiarthrodial joints, also known as cartilaginous joints, are joints where the adjacent bones are connected by cartilage. These joints allow for limited movement and provide both stability and flexibility to the skeletal system. Here is an overview of amphiarthrodial or cartilaginous joints: Amphiarthrodial or Cartilaginous Joints: 1.     Structure : o     Cartilage : §   Amphiarthrodial joints are characterized by the presence of cartilage between the articulating surfaces of the bones. §   The cartilage can be hyaline cartilage or fibrocartilage, depending on the specific joint and its function. o     Lack of Joint Cavity : §   Similar to fibrous joints, cartilaginous joints do not have a synovial cavity, and the bones are held together by the cartilaginous tissue. 2.     Types : o     Synchondroses : §   Synchondroses are cartilaginous joints where the connecting material is hyaline carti...
Post a Comment
Read more

Distinguishing Features of Electrode Artifacts

Dr. Rishabh Pathak
Electrode artifacts in EEG recordings can present with distinct features that differentiate them from genuine brain activity.  1.      Types of Electrode Artifacts : o Variety : Electrode artifacts encompass several types, including electrode pop, electrode contact, electrode/lead movement, perspiration artifacts, salt bridge artifacts, and movement artifacts. o Characteristics : Each type of electrode artifact exhibits specific waveform patterns and spatial distributions that aid in their identification and differentiation from true EEG signals. 2.    Electrode Pop : o Description : Electrode pop artifacts are characterized by paroxysmal, sharply contoured transients that interrupt the background EEG activity. o Localization : These artifacts typically involve only one electrode and lack a field indicating a gradual decrease in potential amplitude across the scalp. o Waveform : Electrode pop waveforms have a rapid rise and a slower fall compared to in...
Post a Comment
Read more

Translocation, Retention and Potential Neurological Lesion in The Brain and Following Nanoparticle Exposure

Dr. Rishabh Pathak
Translocation, retention, and potential neurological lesions in the brain following nanoparticle exposure are important considerations in nanotoxicology and neurotoxicology research. Here are some key points regarding the impact of nanoparticle exposure on the brain: 1.       Translocation to the Brain : o Nanoparticles can enter the brain through various routes, including systemic circulation, olfactory nerve pathways, and disrupted blood-brain barrier (BBB) integrity. o Factors such as nanoparticle size, surface properties, shape, and surface modifications influence their ability to cross biological barriers and reach the brain parenchyma. 2.      Retention in the Brain : o Once nanoparticles translocate to the brain, they may exhibit different retention times depending on their physicochemical properties and interactions with brain cells. o Nanoparticles can accumulate in specific brain regions, such as the olfactory bulb, hippocampus, and...
Post a Comment
Read more

Beta Activity compared to Muscles Artifacts

Dr. Rishabh Pathak
Beta activity in EEG recordings can sometimes be confused with muscle artifacts due to their overlapping frequency components. Frequency Components : o   Muscle artifacts often have frequency components of 25 Hz and greater, which can overlap with the frequency range of beta activity. o   Beta activity in EEG recordings typically falls within the beta frequency range of 13-30 Hz, with variations based on specific brain states and cognitive processes. 2.      Waveform Characteristics : o   Electromyographic (EMG) artifacts, which represent muscle activity, have distinct waveform characteristics that can help differentiate them from beta activity. o   EMG artifacts may exhibit a sharper contour with less rhythmicity, especially when the high-frequency filter is set at 70 Hz or higher, compared to the smoother contour and rhythmicity of beta activity. 3.      High-Frequency Filter Settings : o   Adjusting the high-frequency f...
Post a Comment
Read more