What happens when a neuron fires?
A) potassium ions decrease
B) ion channels are blocked
C) negative ions move into the cell
D) sodium ions move into the cell
D
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Regarding the skin senses, which of the following statements is FALSE? a. The skin is the body's largest sensory organ. b. All skin receptors respond to more than one type of stimulation. c. There are close to one-half million receptors for touch and pressure distributed throughout the body. d. The part of the cerebral cortex that processes information from the skin receptors is called
thesomatosensory cortex. e. There are specific receptors in the skin for warmth and cold.
Through research on visual illusions, Gestalt psychologists demonstrated that:
A) visual illusions can be used as screens for psychological disorders. B) visual illusions allow access to the unconscious mind. C) the mind imposes organization on what it perceives. D) the mind often fails to perceive a unified whole from a disjointed image.
About how many U.S. teens try alcohol at some point during high school?
A. one fourth B. half C. two thirds D. most
The Piagetian sensorimotor stages that involve the infant's responses to her own body are:
stages one and two. stages three and four. stages five and six. stages one and three.