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Related Concept Videos

Regulation of Pulse01:20

Regulation of Pulse

Pulse regulation involves physiological mechanisms that ensure adequate blood flow throughout the body. The heartbeat, regulated by the autonomic nervous system, is influenced by hormonal balance, physical activity, and emotional state.
Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Pulse01:16

Pulse

When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical indicator...
Pulse01:05

Pulse

The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls between...
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
Pulse Assessment Sites01:11

Pulse Assessment Sites

Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...

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Updated: Jul 5, 2026

Developing a Behavioral Box for Assessing Prepulse Inhibition and Neural Activity in Psychiatric Animal Models
06:55

Developing a Behavioral Box for Assessing Prepulse Inhibition and Neural Activity in Psychiatric Animal Models

Published on: July 22, 2025

What can we learn from resource pulses?

Louie H Yang1, Justin L Bastow, Kenneth O Spence

  • 1Section of Evolution and Ecology, University of California, One Shields Avenue, Davis, California 95616, USA. lyang@lifesci.ucsb.edu

Ecology
|May 8, 2008
PubMed
Summary
This summary is machine-generated.

Resource pulses, rare but intense resource availability events, significantly impact individual, population, and community ecology across diverse natural systems. Understanding these pulsed resource dynamics is key to ecological synthesis.

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Area of Science:

  • Ecology
  • Environmental Science
  • Population Dynamics

Background:

  • Ecological processes are influenced by resource availability.
  • Pulsed resource dynamics occur across various natural systems.
  • A unified framework for studying resource pulses is needed.

Purpose of the Study:

  • Define the concept of a resource pulse.
  • Identify common causes and consequences of resource pulses.
  • Propose future research directions for resource pulse dynamics.

Main Methods:

  • Literature review of existing studies on resource pulses.
  • Synthesis of common patterns in resource pulse dynamics.
  • Development of a conceptual framework for resource pulse research.

Main Results:

  • Resource pulses are defined as rare, intense, and brief episodes of increased resource availability.
  • Pulsed resource dynamics are widespread, driven by factors like climate and population outbreaks.
  • Resource pulses affect individual traits, population numbers, and community interactions.

Conclusions:

  • Resource pulse studies offer insights into specific ecological systems and broader ecological theory.
  • Consumers develop strategies to cope with pulsed resource availability.
  • Resource pulses can lead to persistent community effects.