Absence of penile erections during paradoxical sleep. Peculiar penile events during wakefulness and slow wave sleep in the armadillo

  title={Absence of penile erections during paradoxical sleep. Peculiar penile events during wakefulness and slow wave sleep in the armadillo},
  author={Jorge Mario Affanni and Claudio Cervino and Hern{\'a}n J. Aldana Marcos},
  journal={Journal of Sleep Research},
The electroencephalogram (EEG) together with electromyogram (EMG) of the ischiocavernosus, bulbocavernosus and levator penis muscles were chronically monitored across behavioral states of the armadillo Chaetophractus villosus. This animal has a very long penis, which exhibits remarkable phenomena during wakefulness (W), slow wave sleep (SWS) and paradoxical sleep (PS). During W it remains retracted within a skin receptacle. During SWS penile protrusion can be observed together with very complex… 

Impotence and Erectile Problems in Sleep Medicine

The history of SRE testing from its discovery to its clinical role in evaluating male erectile dysfunction is reviewed and the discovery of an animal model to elucidate some of the basic neural mechanisms of S REs is presented.

Sleep-related nocturnal erections and erections during midazolam-induced sedation in healthy young men

The findings suggest that erection monitoring during midazolam-induced sedation after nocturnal sleep deprivation after NSD may be convenient, however, validation of midazoledine-induced morning penile tumescence monitoring with a large population is mandatory.

Sleep Related Erections Throughout the Ages

Throughout the ages, philosophers, theologians, physicians, members of ecclesial law courts, psychoanalysts, psychiatrists, sexologists, physiologists, and urologists have shown interest in SREs.

Characteristics of REM and NREM Sleep

  • P. McNamara
  • Psychology, Biology
    The Neuroscience of Sleep and Dreams
  • 2019
The fact that NREM appears to be associated with the gradual deactivation of a select group of brain structures that are then reactivated during REM suggests that the two sleep states either work in harmony with one another to maintain optimal brain function or that N REM undoes something that REM instantiates.

Spontaneous nocturnal erections and masturbation in captive male chimpanzees (Pan troglodytes)

The findings support hypothetical functional explanations such as the facilitation of nocturnal emissions in order to increase ejaculate quality or an increase in tissue oxygenation to prevent erectile dysfunction.

Evolution of Psychoanalytic Interactions and Conflicts in Vertebrates

In this article, it is attempted to extend the Freudian psychoanalysis as the interactions and conflicts of the realities or memories with the instinctual drives to the vertebra subphylum in ecology

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In sloths sleeping in the wild, predation pressure influenced the timing of sleep, but not the amount of time spent asleep, and the preference for sleeping at night in mainland sloths may be a strategy to avoid detection by nocturnal cats.



Experimental evidence of penile erections during paradoxical sleep in the rat.

It is demonstrated for the first time that rats exhibit penile erections during paradoxical sleep (PS), and this method of chronic penile erection monitoring in the rat provides a new animal model for investigating neural mechanisms of sleep-related erections.

Electromyographic analysis of male rat perineal muscles during copulation and reflexive erections

On the presence of a peculiar alpha rhythm in the olfactory tubercle of waking armadillos.

Expansion of the tunica albuginea during penile inflation in the nine-banded armadillo (Dasypus novemcinctus).

  • D. A. Kelly
  • Biology, Engineering
    The Journal of experimental biology
  • 1999
Artificial inflation of corpora cavernosa from the nine-banded armadillo (Dasypus novemcinctus) showed that the expansion of the tunica albuginea during erection increases both components of flexural

Body temperature of the armadillo Chaetophractus villosus (mammalia, dasypodidae).

  • E. CasanaveJ. Affanni
  • Biology
    Archives internationales de physiologie, de biochimie et de biophysique
  • 1994
Two main different profiles of thermal behaviour in the armadillo Chaetophractus villosus are found, namely: a) one with high variation, mainly due to the daily cycle and the other with middle or low variation, with no predominance of thedaily cycle.

Discrimination Learning in the Armadillo (Chaetophractus villosus): A Study of Positional Strategies

Choice behavior of the armadillo Chaetophractus villosus was studied under laboratory conditions and position habit was the only spatial strategy consistently observed between animals and maintained for a va...

Spatial learning in South American opossums and armadillos.

This experiment compares spatial learning in the South American opossum and armadillo in a Y-maze to find species differences in sensitivity to temporal delays and finds only armadillos mastered the task of returning directly to the start-box after each reinforcement.

Estudio cuantitativo de dos nuevos ritmos bioeléctricos de los bulbos olfatorios registrados en el Armadillo Sudamericano, Chaetophractus villosus (Mammalia, Dasypodidae)

Un nuevo ritmo bioelectrico del bulbo olfatorio, registrado unicamente durante la vigilia, fue detectado en este animal. Para que dicho ritmo se manifieste son necesarias las aferencias periferica y

Williams Textbook of endocrinology

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