Sensation & Perception true/false challenge

People with sensorineural deafness need a special device called a cochlear implant. This is because people with sensorineural deafness have damage to the cochlea or don't have the cilia to translate the vibrations into neural impulses for the brain.

The point where the OPTIC NERVE leaves the eye is the blind spot -- because there are no rods or cones there.

According to the GATE-CONTROL theory of pain, we can lesson our perception of pain by sending large touch signals to complete with the pain signals.

Cones allow us to sense color, but require a lot of light to work and are concentrated in the center of our retinas.

Rods allows us to detect black, white, and shades of grey. Rods allow us to see in low levels of light because they don't require much to function. Rods also help us detect motion in our peripheral vision.

It's the ABSOLUTE THRESHOLD for most humans. It's the smallest amount of the stimulus (sugar molecules) that we can detect about 50% of the time.

As we age, it's actually our sense of SMELL that declines. Also -- with colds and viral infections, we lose our sense of SMELL -- which then affects how we perceive FLAVOR. The loss of the sense of taste is incredible rare, most of the time if we can't taste something it's because we've lost our sense of smell.

Your cochlea is lined with tiny hairs called cilia that transduce the vibrations from the sound waves into neural signals. Your semicircular canals contain fluid and is responsible for your vestibular sense.

The old theory of a "taste map" on the surface of the tongue is not supported by rigorous scientific research. However, the tip and sides of the human tongue are more sensitive to tastes.