Answer to Question 1
Answer: Behavioral studies (e.g., visual search) typically use RTs to make inferences about how attentional processing takes place. ERP studies measure changes in electrical activity in response to a stimulus providing information about the temporal nature of attention (i.e., when it takes place). PET and fMRI studies measure blood flow or metabolism to determine which regions of the brain are active in processing information (i.e., where it takes place). TMS studies of attention use a magnetic field to render a set of neurons inactive for a brief period of time. These studies are somewhat similar to lesion studies without the long-term consequences.
Answer to Question 2
Answer: Both feature integration theory (FIT) and guided search divide the perceptual system into separate feature maps. The feature information stored in these maps is location specific. According to feature integration theory, disjunctive searches isolate feature information in the appropriate feature map while conjunctive searches combine features from multiple maps for a particular location. The main difference between FIT and guided search is that guided search occurs in two stages. In the first stage, preattentive information is obtained and is used to rule out objects that cannot be targets. This information is then used to guide later serial searches.
How the study of genomes and proteomes can provide us with connections to different biological level
Lynx-hare interactions have served as a model system for the study of the effects o
Cradle the head briefly in both hands to end this section.
Middle adults usually have more time to focus attention on their relationships
The results from West and Crook's study of memory for telephone numbers
Barenboim's study show the change in children's descriptions of their peers