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Related Concept Videos

Reflection of Waves01:07

Reflection of Waves

3.7K
When a wave travels from one medium to another, it gets reflected at the boundary of the second medium. A common example of this is when a person yells at a distance from a cliff and hears the echo of their voice. The sound waves (longitudinal waves) traveling in the air are reflected from the bounding cliff. Similarly, flipping one end of a string whose other end is tied to a wall causes a pulse (transverse wave) to travel through the string, which gets reflected upon reaching the wall. In...
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Echo01:06

Echo

506
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
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Subliminal Perception01:15

Subliminal Perception

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Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
259
Heart Sounds01:15

Heart Sounds

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Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V)...
1.9K
Sound Waves: Resonance01:14

Sound Waves: Resonance

2.6K
Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
2.6K
Sound as Pressure Waves01:17

Sound as Pressure Waves

2.4K
Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
The pressure fluctuation depends on the difference in displacements between the successive points in the...
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Updated: Jul 1, 2025

Targeted Training of Ultrasonic Vocalizations in Aged and Parkinsonian Rats
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Silent reflections remain unheard.

Matthew Higgins1, Radhika Palepu1, John Little1

  • 1Mental Health, Addiction and Intellectual Disability Service (MHAIDS), Te Whatu Ora Health New ZealandI, Wellington, New Zealand.

Australasian Psychiatry : Bulletin of Royal Australian and New Zealand College of Psychiatrists
|March 6, 2024
PubMed
Summary
This summary is machine-generated.

Societal factors like medicalization and concept creep have distorted mental health perceptions, leading to increased presentations. Silence from the psychiatric profession has hindered equitable service provision.

Keywords:
Concept creepequitygroup thinkmedicalisationsilence

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Area of Science:

  • Psychiatry
  • Mental Health Studies
  • Sociology of Health

Background:

  • Rising rates of mental health presentations are a significant public health concern.
  • The influence of non-clinical factors on these trends requires thorough examination.
  • A notable silence exists within the psychiatric profession regarding these broader influences.

Purpose of the Study:

  • To investigate the role of non-clinical factors in the increasing number of mental health presentations.
  • To explore the reasons behind the lack of discussion or acknowledgment of these factors within psychiatry.

Main Methods:

  • This study involves a critical review of existing literature on mental health trends.
  • Analysis of sociological and psychological theories related to medicalization and concept creep.
  • Exploration of professional discourse and silence within psychiatric communities.

Main Results:

  • Medicalization and concept creep have contributed to an expanded definition of mental illness.
  • Societal expectations and demands play a crucial role in shaping mental health presentations.
  • Groupthink within the profession may reinforce existing paradigms and limit alternative perspectives.

Conclusions:

  • A confluence of medicalization, concept creep, societal pressures, and professional silence has distorted the understanding of mental health and illness.
  • This distortion impedes equitable mental health service provision.
  • Addressing the silence and incorporating diverse perspectives are essential for improving mental healthcare access and quality.