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Related Concept Videos

Seizures ll: Types01:19

Seizures ll: Types

Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...
Alterations in Muscle Tone lll01:11

Alterations in Muscle Tone lll

Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...
Seizures l: Introduction01:20

Seizures l: Introduction

Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...
Muscles that Move the Head01:19

Muscles that Move the Head

The muscles that move the head are a dynamic and complex group of structures that work together to facilitate a wide range of head movements, including rotation, flexion, extension, and lateral bending.
The bilateral sternocleidomastoid, or SCM, and the suprahyoid and infrahyoid muscles are significant head flexors. The SCM muscles originate at the sternum and clavicle and attach to the mastoid process of the temporal bone. The SCM contracts bilaterally to bend the head forward, whereas...
Seizures: Classification01:13

Seizures: Classification

Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
Alterations in Muscle Tone ll01:12

Alterations in Muscle Tone ll

Alterations in muscle tone are common manifestations of neurological disorders and reflect dysfunction within different nervous system regions. Spasticity, paratonia, and dystonia represent distinct forms of hypertonia, each with unique mechanisms, clinical features, and diagnostic importance.CharacteristicsSpasticity happens from upper motor neuron lesions and is characterized by velocity-dependent resistance to passive movement. Clinical features include:Exaggerated deep tendon reflexesClonus...

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Related Experiment Video

Updated: Jun 12, 2026

MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor
05:54

MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor

Published on: December 13, 2017

[Head tremor].

Alexandre Gironell1, Bàrbara Vives, Javier Pagonabarraga

  • 1Unidad de Trastornos del Movimiento, Servicio de Neurología, Hospital de Sant Pau, Universitat Autònoma de Barcelona, Barcelona, España. agironell@santpau.cat

Revista De Neurologia
|June 2, 2010
PubMed
Summary
This summary is machine-generated.

Brain tremors have distinct types and causes, with limited pharmacological treatments. Botulinum toxin and deep brain stimulation offer therapeutic options for severe head tremor cases.

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Area of Science:

  • Neurology
  • Neuroscience

Context:

  • Head tremor is a neurological symptom occurring in various diseases.
  • Limited research exists on the clinical features of head tremor.

Purpose:

  • To review the symptomatology, etiology, and therapeutics of brain tremors.
  • To differentiate between holocephalic and segmented brain tremors.
  • To explore treatment options for brain tremors.

Summary:

  • Brain tremors are classified into holocephalic (whole brain) and segmented types.
  • Essential tremor and dystonic tremor commonly cause holocephalic tremors.
  • Parkinsonism typically presents with segmented brain tremors.
  • Pharmacological treatments for brain tremors are limited.
  • Botulinum toxin shows promise for various brain tremor causes.
  • Deep brain stimulation of the ventral thalamic nucleus is effective for severe cases.

Impact:

  • Semiological characteristics aid in diagnosing the cause of brain tremors.
  • Botulinum toxin and functional surgery provide valuable therapeutic options for specific patients.
  • This review enhances understanding and management strategies for brain tremors.