The Absence of So-called Compensatory Ocular Countertorsion

Ocular torsion: rotations around the “WHY” axis

“…Jampel feels that the main purpose of torsional movements is to "protect the retinas by dampening [sic] the effect of the head movement on this sensitive tissue." 32 To this degree, he is in agreement with most other investigators. However, the main area of disagreement relates to the issue of there being any final static countertorsion.…”

Ocular torsion: rotations around the “WHY” axis

“…Jampel feels that the main purpose of torsional movements is to "protect the retinas by dampening [sic] the effect of the head movement on this sensitive tissue." 32 To this degree, he is in agreement with most other investigators. However, the main area of disagreement relates to the issue of there being any final static countertorsion.…”

Effect of Head Tilt and Ocular Compensatory Mechanisms on Retinal Nerve Fiber Layer Measurements by Cirrus Spectral Domain and Spectralis Optical Coherence Tomography in Normal Subjects

“…Other studies claim that only torsional movements occur without eliciting COCT during head tilt. 8 Our results although not directly quantifying the degree of COCT, nevertheless show that COCT if present may not be significant enough to reduce errors due to head tilt. This could be due to the smaller degree of COCT compared with the degree of head tilt.…”

Vestibular Stimulation Interferes with the Dynamics of An Internal Representation of Gravity

“…Our results are compatible with neither, as no change on the direction of representational gravity was found. Furthermore, there is some evidence that countertorsion is a transient phenomenon that accompanies head tilt, but tends to dissipate once the head stabilizes (Jampel & Shi, 2002). Overall, it does not seem likely that our results can be significantly linked with any oculomotor phenomenon due to centrifugation.…”

Ocular torsion: rotations around the “WHY” axis

“…Jampel feels that the main purpose of torsional movements is to "protect the retinas by dampening [sic] the effect of the head movement on this sensitive tissue." 32 To this degree, he is in agreement with most other investigators. However, the main area of disagreement relates to the issue of there being any final static countertorsion.…”

Effect of Head Tilt and Ocular Compensatory Mechanisms on Retinal Nerve Fiber Layer Measurements by Cirrus Spectral Domain and Spectralis Optical Coherence Tomography in Normal Subjects

“…Other studies claim that only torsional movements occur without eliciting COCT during head tilt. 8 Our results although not directly quantifying the degree of COCT, nevertheless show that COCT if present may not be significant enough to reduce errors due to head tilt. This could be due to the smaller degree of COCT compared with the degree of head tilt.…”

Vestibular Stimulation Interferes with the Dynamics of An Internal Representation of Gravity

“…Our results are compatible with neither, as no change on the direction of representational gravity was found. Furthermore, there is some evidence that countertorsion is a transient phenomenon that accompanies head tilt, but tends to dissipate once the head stabilizes (Jampel & Shi, 2002). Overall, it does not seem likely that our results can be significantly linked with any oculomotor phenomenon due to centrifugation.…”

Ocular torsion: rotations around the “WHY” axis

“…Jampel feels that the main purpose of torsional movements is to "protect the retinas by dampening [sic] the effect of the head movement on this sensitive tissue." 32 To this degree, he is in agreement with most other investigators. However, the main area of disagreement relates to the issue of there being any final static countertorsion.…”

Effect of Head Tilt and Ocular Compensatory Mechanisms on Retinal Nerve Fiber Layer Measurements by Cirrus Spectral Domain and Spectralis Optical Coherence Tomography in Normal Subjects

“…Other studies claim that only torsional movements occur without eliciting COCT during head tilt. 8 Our results although not directly quantifying the degree of COCT, nevertheless show that COCT if present may not be significant enough to reduce errors due to head tilt. This could be due to the smaller degree of COCT compared with the degree of head tilt.…”

Vestibular Stimulation Interferes with the Dynamics of An Internal Representation of Gravity

“…Our results are compatible with neither, as no change on the direction of representational gravity was found. Furthermore, there is some evidence that countertorsion is a transient phenomenon that accompanies head tilt, but tends to dissipate once the head stabilizes (Jampel & Shi, 2002). Overall, it does not seem likely that our results can be significantly linked with any oculomotor phenomenon due to centrifugation.…”