Cranial, Visual & Vestibular Integration Flashcards

What does PRI mean by 'visual proprioception'?

Answer: Peripheral visual input that contributes to spatial orientation and can reinforce postural patterns

Visual proprioception in PRI refers to peripheral visual input that contributes to spatial orientation and can reinforce or perpetuate asymmetrical postural patterns without conscious awareness.

How does temporal bone positioning relate to postural asymmetry in PRI?

Answer: Because it houses vestibular structures, temporal bone position can influence vestibular input and cranial postural patterns

The temporal bone houses the vestibular apparatus, so its position relative to surrounding cranial bones can influence vestibular input quality and contribute to asymmetrical postural patterns.

How does trigeminal nerve afferent input influence postural patterns in PRI practice?

Answer: Trigeminal afferent input connects to the vestibular nucleus and can modulate cervical muscle tone

Trigeminal afferent input has brainstem connections to the vestibular nucleus and cervical motor neurons, enabling it to modulate cervical muscle tone and contribute to postural asymmetry patterns.

In PRI, what is the clinical significance of the sphenobasilar junction?

Answer: Asymmetrical sphenobasilar position may contribute to cranial base mechanics affecting dural tension and cervical patterns

PRI considers that asymmetrical positioning at the sphenobasilar junction may affect cranial base mechanics, influencing dural tension and cervical postural patterns that contribute to left AIC patterns.

What is the relationship between mandibular (jaw) position and postural restoration in PRI?

Answer: Mandibular position can influence cervical muscle activity through the trigeminal-cervical complex

Mandibular position influences cervical muscle activity through the trigeminal-cervical complex, and mandibular asymmetry can contribute to or perpetuate PRI patterned positions.

How do therapeutic prism lenses work in PRI treatment?

Answer: They shift the perceived visual vertical, potentially reducing compensatory postural muscle activation

Therapeutic prism lenses alter perceived visual vertical, which can reduce the compensatory postural muscle activation the body generates when trying to maintain visual level from an asymmetrical position.

What is the clinical relevance of righting reflexes in PRI treatment?

Answer: Righting reflexes can perpetuate postural asymmetry as the body compensates to keep eyes and head level

Righting reflexes automatically drive the body to keep the visual horizon level, which can perpetuate compensatory asymmetrical muscle activation patterns that PRI treatment aims to address.