Definition

1. Adjective:
   • On or relating to the opposite side (of the body): "Contralateral" describes a position, structure, or effect that is situated on or pertains to the side of the body opposite to a point of reference.

Usage

• The term "contralateral" is primarily used in medical, anatomical, and neurological contexts to describe relationships between body parts or the effects of stimuli or injuries.
• It is often paired with its opposite, "ipsilateral" (on the same side).

Examples

• Adjective:
  • A stroke affecting the left side of the brain often causes contralateral paralysis, meaning weakness on the right side of the body.
  • The doctor tested for a contralateral reflex by tapping the tendon on one knee and observing the reaction in the opposite leg.

Advanced Usage

• "Contralateral control": A principle in neurology where one hemisphere of the brain controls motor and sensory functions on the opposite side of the body.

  • The phenomenon of contralateral control explains why damage to the right motor cortex impairs movement on the left side.

• "Contralateral routing of signals (CROS)": A hearing aid configuration where a microphone on the poorer ear sends sound to the better ear.

  • For patients with single-sided deafness, a contralateral routing of signals hearing aid can improve sound awareness.

Variants and Related Words

• Ipsilateral (adj): Situated on or affecting the same side (of the body).

  • The pain was ipsilateral to the site of the injury.

• Bilateral (adj): Involving or relating to two sides, often both sides of the body.

  • The patient underwent bilateral knee surgery.

Synonyms

• Opposite-side: Pertaining to the other side.
• Cross-lateral: Involving the opposite side (less common).

Antonyms

• Ipsilateral: On the same side.

Adjective

1. on or relating to the opposite side (of the body)