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12 Cards in this Set

  • Front
  • Back

The Various Human Senses

Vision, hearing, touch, taste, smell, balance (vestibular sense),limb position and movement, temperature, and pain.

Receptors

Specialized structures that respond to a physical stimulus by producing electrical changes that can initiate neural impulses.

Sensory Neurons

Carry neural impulses from the receptor to the central nervous system.

Sensory Areas

Sensory Neurons and Pathways lead to specific sensory areas in the cortex.

Transduction

The conversion of energy from a physical stimulus to neural responses.

Coding

Representation of the Stimulus in the pattern of action potentials.

Quantity

A stronger stimulus=>larger electrical charges in the receptors=>faster rates of action potentials in sensory neurons.

Quality

Different receptors are tuned to respond to different forms of energy. "Specific nerve energies."

Cornea and Lens

focus image onto back of eye, where the sensitive cells of the retina respond to light.

Retinal ganglion cells

Send messages out of the optic nerve to the thalamus

fovea

Area of retina where the receptor cells are especially densely packed.

Blind Spot

Where the optical nerve leaves the eye, there is no room for receptors.