Vibration detection by the macula neglecta of sharks

The Papilla Neglecta of Turtles: A Detector of Head Rotations with Unique Sensory Coding Properties

“…Although the PN is widely distributed among vertebrates, its function has remained obscure. Previous functional studies had been confined to elasmobranchs, in which the PN is a vibratory or auditory organ (Lowenstein and Roberts, 1951;Fay et al, 1975;Corwin, 1981). In contrast, our study shows that the PN in turtles resembles the PC (and the other two cristae) in detecting angular head rotations, although at the same time differing from the cristae in its response dynamics and directional properties.…”

The Papilla Neglecta of Turtles: A Detector of Head Rotations with Unique Sensory Coding Properties

“…Although the PN is widely distributed among vertebrates, its function has remained obscure. Previous functional studies had been confined to elasmobranchs, in which the PN is a vibratory or auditory organ (Lowenstein and Roberts, 1951;Fay et al, 1975;Corwin, 1981). In contrast, our study shows that the PN in turtles resembles the PC (and the other two cristae) in detecting angular head rotations, although at the same time differing from the cristae in its response dynamics and directional properties.…”

Ontogenetic development of inner ear hair cell organization in the New Zealand carpet shark Cephaloscyllium isabellum

“…Contrary to the otolith organs, the macula neglecta, thought to serve an important role in sound detection in sharks (Fay et al, 1974;Corwin, 1981b), did not exhibit ontogenetic increases in macular area or HCT in C. isabellum; it maintained the same size and number of HCs despite animal growth (including in the other maculae). This result is unexpected, as previous studies have shown ontogenetic growth in the macula neglecta of other elasmobranchs (Corwin, 1983;Barber et al, 1985;Sauer et al, 2022).…”

Interspecific Variation in the Inner Ear Maculae of Sharks

“…The majority of research on shark audition, especially in the context of directional hearing ( Popper and Fay 1977 ; Corwin 1989 ; Myrberg 2001 ), has focused on this structure, likely given its relatively large size, anatomical position ( Tester et al. 1972 ; Corwin 1977 ), and remarkable sensitivity to vibrations ( Lowenstein and Roberts 1951 ; Fay et al. 1974 ; Corwin 1981a ).…”

“…However, much of the research on the macula neglecta in sharks has been conducted in members of the family Carcharhinidae ( Tester et al. 1972 ; Fay et al. 1974 ; Corwin 1977 , 1981a , b ), with very little data available on the macula neglecta in sharks outside this family.…”

The Papilla Neglecta of Turtles: A Detector of Head Rotations with Unique Sensory Coding Properties

“…Although the PN is widely distributed among vertebrates, its function has remained obscure. Previous functional studies had been confined to elasmobranchs, in which the PN is a vibratory or auditory organ (Lowenstein and Roberts, 1951;Fay et al, 1975;Corwin, 1981). In contrast, our study shows that the PN in turtles resembles the PC (and the other two cristae) in detecting angular head rotations, although at the same time differing from the cristae in its response dynamics and directional properties.…”

Ontogenetic development of inner ear hair cell organization in the New Zealand carpet shark Cephaloscyllium isabellum

“…Contrary to the otolith organs, the macula neglecta, thought to serve an important role in sound detection in sharks (Fay et al, 1974;Corwin, 1981b), did not exhibit ontogenetic increases in macular area or HCT in C. isabellum; it maintained the same size and number of HCs despite animal growth (including in the other maculae). This result is unexpected, as previous studies have shown ontogenetic growth in the macula neglecta of other elasmobranchs (Corwin, 1983;Barber et al, 1985;Sauer et al, 2022).…”

Interspecific Variation in the Inner Ear Maculae of Sharks

“…The majority of research on shark audition, especially in the context of directional hearing ( Popper and Fay 1977 ; Corwin 1989 ; Myrberg 2001 ), has focused on this structure, likely given its relatively large size, anatomical position ( Tester et al. 1972 ; Corwin 1977 ), and remarkable sensitivity to vibrations ( Lowenstein and Roberts 1951 ; Fay et al. 1974 ; Corwin 1981a ).…”

“…However, much of the research on the macula neglecta in sharks has been conducted in members of the family Carcharhinidae ( Tester et al. 1972 ; Fay et al. 1974 ; Corwin 1977 , 1981a , b ), with very little data available on the macula neglecta in sharks outside this family.…”

The Papilla Neglecta of Turtles: A Detector of Head Rotations with Unique Sensory Coding Properties

“…Although the PN is widely distributed among vertebrates, its function has remained obscure. Previous functional studies had been confined to elasmobranchs, in which the PN is a vibratory or auditory organ (Lowenstein and Roberts, 1951;Fay et al, 1975;Corwin, 1981). In contrast, our study shows that the PN in turtles resembles the PC (and the other two cristae) in detecting angular head rotations, although at the same time differing from the cristae in its response dynamics and directional properties.…”

Ontogenetic development of inner ear hair cell organization in the New Zealand carpet shark Cephaloscyllium isabellum

“…Contrary to the otolith organs, the macula neglecta, thought to serve an important role in sound detection in sharks (Fay et al, 1974;Corwin, 1981b), did not exhibit ontogenetic increases in macular area or HCT in C. isabellum; it maintained the same size and number of HCs despite animal growth (including in the other maculae). This result is unexpected, as previous studies have shown ontogenetic growth in the macula neglecta of other elasmobranchs (Corwin, 1983;Barber et al, 1985;Sauer et al, 2022).…”

Interspecific Variation in the Inner Ear Maculae of Sharks

“…The majority of research on shark audition, especially in the context of directional hearing ( Popper and Fay 1977 ; Corwin 1989 ; Myrberg 2001 ), has focused on this structure, likely given its relatively large size, anatomical position ( Tester et al. 1972 ; Corwin 1977 ), and remarkable sensitivity to vibrations ( Lowenstein and Roberts 1951 ; Fay et al. 1974 ; Corwin 1981a ).…”

“…However, much of the research on the macula neglecta in sharks has been conducted in members of the family Carcharhinidae ( Tester et al. 1972 ; Fay et al. 1974 ; Corwin 1977 , 1981a , b ), with very little data available on the macula neglecta in sharks outside this family.…”