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Related Concept Videos

Auditory Perception01:17

Auditory Perception

1.3K
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Auditory Pathway01:15

Auditory Pathway

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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
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Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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The Auditory Ossicles01:11

The Auditory Ossicles

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The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
3.4K
Respiratory System Abnormal Finding II: Palpation and Auscultation01:31

Respiratory System Abnormal Finding II: Palpation and Auscultation

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In assessing respiratory abnormalities, palpation and auscultation are critical tools for detecting and interpreting various pathophysiological changes. These techniques provide insight into underlying disorders by evaluating tactile sensations and sounds produced by the respiratory system.
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
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Elaborative Rehearsals01:07

Elaborative Rehearsals

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Elaborative rehearsal is a crucial cognitive strategy that strengthens information encoding in long-term memory by making meaningful connections between new data and pre-existing knowledge. This approach contrasts with maintenance rehearsal, which involves simple repetition without delving into the significance of the information. While maintenance rehearsal might temporarily keep information active in short-term memory, it is less effective for long-term retention.
The effectiveness of...
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Related Experiment Video

Updated: Feb 25, 2026

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
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Palinacousis-Auditory Perseveration.

Soo-Hyun Park1, Kwang-Ki Kim1

  • 1Department of Neurology, Dongguk University Ilsan Hospital, Goyang, Korea.

Journal of Epilepsy Research
|August 5, 2017
PubMed
Summary
This summary is machine-generated.

Palinacousis, an auditory illusion, can manifest as a symptom of temporal lobe epilepsy, particularly after a stroke. Treatment with antiepileptic drugs effectively resolved this rare neurological symptom.

Keywords:
ElectroencephalographyPalinacousisPost-stroke seizureTemporal lobe epilepsy

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Area of Science:

  • Neurology
  • Neuroscience
  • Auditory Perception

Background:

  • Palinacousis is a rare auditory illusion.
  • It is infrequently reported in temporal lobe dysfunction.
  • Its occurrence as an epileptic phenomenon is not well-established.

Observation:

  • A 71-year-old man with a history of left middle cerebral artery infarction and valvular heart disease presented with palinacousis.
  • Electroencephalography showed normal waves, and no psychotic diseases were diagnosed.
  • The patient was diagnosed with temporal lobe epilepsy with palinacousis secondary to stroke.

Findings:

  • Palinacousis can occur as an aura, simple partial seizure, complex partial seizure, or postictal event.
  • The auditory illusion may be more common in patients with receptive aphasias or diffuse cerebral dysfunction.
  • Palinacousis was completely reversed following treatment with antiepileptic drugs.

Implications:

  • Palinacousis can serve as an epileptic phenomenon to help localize potential brain lesions.
  • Recognizing palinacousis in epilepsy can improve patient diagnosis and care.
  • This case highlights the importance of considering epilepsy in patients presenting with auditory illusions, especially post-stroke.