The answer is unconditioned stimulus and unconditioned response in which in classical conditioning if the sour taste of lemon juice spontaneously reasons the mouth to pucker the lemon juice is the unconditioned stimulus and the pucker of the lips and tongue is the unconditioned response. In addition, classical conditioning plays a significant role in which the progress of emotional responses such as anxiety or embarrassment.
Studies regarding rat learning and brain structure by Greenough, et al. (1990) and Wallace, et al. (1992) suggest that: <u>Early experiences such as learning cause physical changes in the brain.</u>
<u></u>
The brain structure is composed of three main parts: the forebrain, midbrain and hindbrain, each with multiple parts.The brain is housed inside the bony covering called the cranium. The cranium protects the brain from injury.
Brains structure are made of soft tissue, which includes gray and white matter, containing the nerve cells, non-neuronal cells (which help to maintain neurons and brain health), and small blood vessels.
learn more about Brain structure here
brainly.com/question/11139051
#SPJ4
