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Related Concept Videos

Functional Brain Systems: Limbic System01:15

Functional Brain Systems: Limbic System

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The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
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The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
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Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
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In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
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Group Therapy01:26

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Group therapy is a sociocultural approach to psychological treatment, where individuals with shared psychological challenges come together under the guidance of a mental health professional. This therapeutic modality offers unique opportunities for individuals to connect, share, and grow within the context of a supportive group. By fostering mutual understanding and collaboration, group therapy can address a range of psychological concerns effectively, often complementing or surpassing the...
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First-order systems, such as RC circuits, are foundational in understanding dynamic systems due to their straightforward input-output relationship. Analyzing their responses to different input functions under zero initial conditions reveals significant insights into system behavior.
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Related Experiment Video

Updated: Feb 16, 2026

A Preclinical Murine Model of Hepatic Metastases
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Systemic therapy for brain metastases.

Vyshak Alva Venur1, Vidhya Karivedu2, Manmeet S Ahluwalia3

  • 1Division of Hematology and Oncology, Department of Internal Medicine, University of Iowa Hospitals and Clinics, Iowa City, IA, United States.

Handbook of Clinical Neurology
|January 9, 2018
PubMed
Summary

Brain metastases from advanced cancers like lung, breast, and melanoma are increasing. New targeted therapies and immunotherapies show promise, offering new hope for patients.

Keywords:
brain metastasesbreast cancerimmunotherapylung cancermelanomatargeted therapy

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Area of Science:

  • Neuro-oncology
  • Malignancy
  • Cancer Metastasis

Background:

  • Central nervous system (CNS) metastases significantly impact patients with advanced cancers.
  • Lung cancer, breast cancer, and melanoma are primary contributors to brain metastases.
  • Increasing incidence is linked to improved survival, systemic disease management, and advanced imaging.

Purpose of the Study:

  • To review the challenges in treating brain metastases.
  • To discuss clinical studies of chemotherapy for brain metastases.
  • To highlight current trials and evidence for targeted therapies and immunotherapies.

Main Methods:

  • Review of clinical studies on chemotherapy efficacy in CNS metastases.
  • Analysis of targeted therapy trials, focusing on blood-brain barrier penetration.
  • Evaluation of emerging immunotherapeutic agents for intracranial activity.

Main Results:

  • Traditional chemotherapy has limited efficacy due to the blood-brain barrier.
  • Targeted small-molecule tyrosine kinase inhibitors demonstrate CNS activity.
  • New immunotherapies show initial promise for treating brain metastases.

Conclusions:

  • The treatment landscape for brain metastases is evolving with targeted therapies and immunotherapies.
  • These novel agents offer improved efficacy compared to traditional chemotherapy.
  • Further research is crucial to optimize treatment strategies for CNS metastases.