2480 - Dec 11 - key concepts (1) Flashcards
Inattentional blindness
is the failure to notice an unexpected stimulus that is in plain sight, even though the person is looking directly at it. This occurs because attention is focused on something else
Dichotic listening tasks
are experiments in which participants are presented with different auditory stimuli to each ear. They are asked to attend to one ear and ignore the other. These tasks are used to study selective attention
Unilateral neglect syndrome
is a neurological disorder in which a person ignores one side of their visual field. This is often due to damage to the parietal lobe
Attention
is the ability to focus on a particular stimulus or task while ignoring others
Holistic recognition
is a type of object recognition in which the brain processes the entire object as a whole, rather than breaking it down into its individual parts
Prosopagnosia
is a neurological disorder in which a person has difficulty recognizing faces. This is often due to damage to the fusiform face area (FFA), a region in the brain that is specialized for processing faces
Associative agnosia
is a neurological disorder in which a person can perceive objects, but they cannot recognize them. This is often due to damage to the areas of the brain responsible for associating visual information with meaning
Recognition by components (RBC)
is a theory of object recognition that proposes that the brain recognizes objects by breaking them down into their basic 3D shapes, called geons
McClelland and Rumelhart model
is a model of word recognition that is similar to feature nets, but it also includes inhibitory connections. This means that the activation of one detector can inhibit the activation of other detectors. This helps to explain how the brain resolves ambiguous stimuli
Well-formedness
refers to the extent to which a letter string conforms to the rules of English orthography (spelling). People are better at recognizing well-formed letter strings, even if they are not real words, than ill-formed letter strings
Word superiority effect (WSE)
refers to the phenomenon that people are better at recognizing letters when they are presented within words than when they are presented in isolation. This suggests that the context of a word provides top-down information that facilitates letter recognition
Feature nets
are theoretical models of object recognition that propose that the brain recognizes objects by detecting and processing their individual features
Object recognition
is the process of identifying and categorizing objects in the environment
Akinetopsia
is a rare neurological disorder that impairs the ability to perceive motion. Individuals with akinetopsia see the world as a series of still images
Visual coding
is the process by which the brain transforms visual information into neural signals
Visual system
is the part of the nervous system responsible for processing visual information. It includes the eyes, optic nerves, and visual cortex in the brain
Fregoli delusion
is a rare disorder in which a person believes that different people are actually the same person in disguise. The specific cause of Fregoli delusion is unknown, but it is thought to be related to damage to the brain, particularly in the frontal and parietal lobes
Capgras syndrome
is a rare disorder in which a person believes that a loved one has been replaced by an imposter. This may be due to a disconnection between the areas of the brain responsible for facial recognition and emotional processing
Neuropsychology
is the study of the relationship between brain function and behavior. It often involves studying individuals with brain damage or neurological disorders
Neuroimaging
refers to techniques used to study the structure and function of the brain. Examples include fMRI and PET scans.
Split-brain patients
are individuals who have had their corpus callosum (the band of nerve fibers connecting the two hemispheres) severed. This procedure is sometimes performed to treat severe epilepsy
Lateralization
is the specialization of the two hemispheres of the brain for different functions
Neurotransmitters
are chemical messengers that transmit signals across the synapse.
synapse
is the junction between two neurons, where communication occurs