Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
The Wave Nature of Light02:12

The Wave Nature of Light

The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
Standing Waves01:17

Standing Waves

Sometimes waves do not seem to move; rather, they just vibrate in place. Unmoving waves can be seen on the surface of a glass of milk kept in a refrigerator, which is one example of standing waves. Vibrations from the refrigerator motor create waves on the milk that oscillate up and down but do not seem to move across the surface. These waves are formed or created by the superposition of two or more identical moving waves in opposite directions. The waves move through each other, with their...
Modes of Standing Waves - I01:03

Modes of Standing Waves - I

A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This phenomenon...
Wave Parameters01:10

Wave Parameters

The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
Travelling Waves01:04

Travelling Waves

A wave is a disturbance that propagates from its source, repeating itself periodically, and is typically associated with simple harmonic motion. Mechanical waves are governed by Newton's laws and require a medium to travel. A medium is a substance in which a mechanical wave propagates, and the medium produces an elastic restoring force when it is deformed.
Water waves, sound waves, and seismic waves are some examples of mechanical waves. For water waves, the wave propagation medium is water;...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Evaluating the National Early Warning Score (NEWS) in triage: A machine learning perspective.

International emergency nursing·2025
Same author

Chat-GPT in triage: Still far from surpassing human expertise - An observational study.

The American journal of emergency medicine·2025
Same author

Artificial intelligence (ChatGPT 4.0) vs. Human expertise for epileptic seizure and epilepsy diagnosis and classification in Adults: An exploratory study.

Epilepsy & behavior : E&B·2025
Same author

The Face Reader: Jean-Martin Charcot (1825-1893) and Facial Expressions in Progressive Supranuclear Palsy.

Movement disorders clinical practice·2025
Same author

Reproducibility of the Manchester Triage System: a multicentre vignette study.

Emergency medicine journal : EMJ·2025
Same author

From testicles to brain: Understanding Dante's dream through medieval medicine.

Journal of the history of the neurosciences·2025
Same journal

Seizure Detection Software Used to Complement the Visual Screening Process for Long-Term EEG Monitoring.

American journal of electroneurodiagnostic technology·2015
Same journal

Waveform window #21. Anomaly during pedicle screw stimulation.

American journal of electroneurodiagnostic technology·2012
Same journal

Detection and prevention of impending brachial plexus injury secondary to arm positioning using ulnar nerve somatosensory evoked potentials during transaxillary approach for thyroid lobectomy.

American journal of electroneurodiagnostic technology·2012
Same journal

Transcranial motor evoked potential changes induced by provocative testing during embolization of cerebral arteriovenous malformations in patients under total intravenous anesthesia.

American journal of electroneurodiagnostic technology·2012
Same journal

Intraoperative neurophysiological monitoring (IONM): lessons learned from 32 case events in 2069 spine cases.

American journal of electroneurodiagnostic technology·2012
Same journal

Kathleen Mears Memorial Lecture: Are we ready for 2014? An overview of healthcare reform for the neurodiagnostic practitioner.

American journal of electroneurodiagnostic technology·2012
See all related articles

Related Experiment Video

Updated: May 30, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Lambda waves.

Francesco Brigo1

  • 1Department of Neurological, Neuropsychological, Morphological, and Movement Sciences, Section of Neurology, University of Verona, Verona, Italy.

American Journal of Electroneurodiagnostic Technology
|August 4, 2011
PubMed
Summary
This summary is machine-generated.

Lambda waves are physiological brain signals detected in the occipital region during visual scanning with open eyes. These sharp transients are associated with saccadic eye movements and visual exploration, disappearing during sleep or when eyes are closed.

More Related Videos

Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits
10:25

Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits

Published on: March 27, 2021

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Related Experiment Videos

Last Updated: May 30, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits
10:25

Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits

Published on: March 27, 2021

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Area of Science:

  • Neurophysiology
  • Cognitive Neuroscience

Background:

  • Lambda waves are distinct electroencephalogram (EEG) waveforms.
  • They are characterized by triangular, sharp transients.
  • These waves are observed in the occipital regions.

Purpose of the Study:

  • To describe the physiological characteristics of lambda waves.
  • To understand the conditions under which lambda waves are elicited.
  • To investigate the neural correlates of lambda wave generation.

Main Methods:

  • Observational study of electroencephalogram (EEG) signals.
  • Recording EEG during visual scanning tasks.
  • Eliciting lambda waves by visual exploration of complex stimuli.

Main Results:

  • Lambda waves occur physiologically when the eyes are open.
  • They are associated with saccadic eye movements during visual scanning.
  • Waveforms disappear when eyes are closed or during sleep.
  • Expression is linked to functional activation of the parieto-occipital region.

Conclusions:

  • Lambda waves are a normal physiological response during active visual exploration.
  • Their generation is likely linked to specific neural activity in the parieto-occipital cortex.
  • Further research can explore their role in visual processing.