Podcast
Questions and Answers
What is the primary focus of Cognitive Psychology?
What is the primary focus of Cognitive Psychology?
- Neurotransmitter functions
- Brain activity
- Mental operations and transformations (correct)
- Stimulus-response mechanisms
Cognitive Neuroscience does not associate mental operations with brain activity.
Cognitive Neuroscience does not associate mental operations with brain activity.
False (B)
Who devised an experiment demonstrating different mental representations of letters?
Who devised an experiment demonstrating different mental representations of letters?
Michael Posner
Cognitive Psychology assumes that we are not ______ machines.
Cognitive Psychology assumes that we are not ______ machines.
Match the type of identity to its corresponding letter condition:
Match the type of identity to its corresponding letter condition:
What technique did Posner use to demonstrate the impact of time intervals on reaction times?
What technique did Posner use to demonstrate the impact of time intervals on reaction times?
Reaction time differences reflect the complexity of mental representations accessed.
Reaction time differences reflect the complexity of mental representations accessed.
What kind of representations did Michael Posner demonstrate exist for letters?
What kind of representations did Michael Posner demonstrate exist for letters?
What advantage does double dissociation studies provide in understanding cognitive functions?
What advantage does double dissociation studies provide in understanding cognitive functions?
Double dissociations can occur without the involvement of healthy control subjects.
Double dissociations can occur without the involvement of healthy control subjects.
What is the primary limitation of group studies compared to case studies?
What is the primary limitation of group studies compared to case studies?
Electroencephalogram and ____________ are used to measure the electrical activity associated with specific tasks.
Electroencephalogram and ____________ are used to measure the electrical activity associated with specific tasks.
Match the following brain imaging techniques with their primary function:
Match the following brain imaging techniques with their primary function:
What is a key feature of transcranial magnetic stimulation (TMS)?
What is a key feature of transcranial magnetic stimulation (TMS)?
The spatial resolution of EEG is superior to that of fMRI.
The spatial resolution of EEG is superior to that of fMRI.
What was the specific anomia observed in the patient case mentioned?
What was the specific anomia observed in the patient case mentioned?
In double dissociation studies, a group of patients displaying deficits in task A is compared to another group showing deficits in task __________.
In double dissociation studies, a group of patients displaying deficits in task A is compared to another group showing deficits in task __________.
Why are case studies considered informative compared to group studies?
Why are case studies considered informative compared to group studies?
What is one of the main findings from the Sternberg memory task?
What is one of the main findings from the Sternberg memory task?
Memory search operates in a parallel manner according to the Sternberg task.
Memory search operates in a parallel manner according to the Sternberg task.
What does the Stroop task demonstrate about information processing?
What does the Stroop task demonstrate about information processing?
The technique that uses micro-electrodes to record neuronal activity is called _____ recordings.
The technique that uses micro-electrodes to record neuronal activity is called _____ recordings.
Match the following terms with their definitions:
Match the following terms with their definitions:
Which technique allows for the study of gene functions in cognitive processes?
Which technique allows for the study of gene functions in cognitive processes?
Single cell recordings can only be performed on awake animals.
Single cell recordings can only be performed on awake animals.
What is one of the main limitations of individual neuron studies?
What is one of the main limitations of individual neuron studies?
In dual tasks, subjects often experience increased reaction times due to _____ capacity.
In dual tasks, subjects often experience increased reaction times due to _____ capacity.
Which of the following is a key operation in the memory process according to Cognitive Psychology?
Which of the following is a key operation in the memory process according to Cognitive Psychology?
Micro-electrodes cause significant damage when inserted into the brain.
Micro-electrodes cause significant damage when inserted into the brain.
What method is used to integrate gene constructs into host genes in targeted approaches?
What method is used to integrate gene constructs into host genes in targeted approaches?
In the Sternberg task, the _____ increases with the number of letters presented.
In the Sternberg task, the _____ increases with the number of letters presented.
What characterizes the reaction times for target rejections in the Sternberg memory task?
What characterizes the reaction times for target rejections in the Sternberg memory task?
What is one consequence of high-speed bullets on the brain during wars?
What is one consequence of high-speed bullets on the brain during wars?
Repeated mild traumatic brain injury can lead to early onset dementia.
Repeated mild traumatic brain injury can lead to early onset dementia.
Name one common cause of brain trauma.
Name one common cause of brain trauma.
The surgical removal of tissue to prevent seizures in epilepsy patients is known as _____ surgery.
The surgical removal of tissue to prevent seizures in epilepsy patients is known as _____ surgery.
Match the following neurological conditions with their characteristics:
Match the following neurological conditions with their characteristics:
Which of the following is NOT a primary focus of cognitive neuroscience?
Which of the following is NOT a primary focus of cognitive neuroscience?
Deep Brain Stimulation (DBS) is currently a common treatment for depression.
Deep Brain Stimulation (DBS) is currently a common treatment for depression.
What is a significant concern regarding post-mortem studies of the brain?
What is a significant concern regarding post-mortem studies of the brain?
Functional neurosurgery aims to alleviate a variety of _____ symptoms.
Functional neurosurgery aims to alleviate a variety of _____ symptoms.
Which technique allows for focused investigation of cognitive dysfunctions?
Which technique allows for focused investigation of cognitive dysfunctions?
Cognitive neuropsychologists design tasks to show single dissociations.
Cognitive neuropsychologists design tasks to show single dissociations.
What is one result of tumors on the brain?
What is one result of tumors on the brain?
Match the following types of cognitive dysfunction with their causes:
Match the following types of cognitive dysfunction with their causes:
What does functional neurosurgery often involve for epilepsy patients?
What does functional neurosurgery often involve for epilepsy patients?
Cognitive dysfunction typically yields insight into healthy cognitive function.
Cognitive dysfunction typically yields insight into healthy cognitive function.
Flashcards
Cognitive Psychology
Cognitive Psychology
The study of mental processes, such as perception, attention, memory, and language.
Cognitive Neuroscience
Cognitive Neuroscience
A field that combines cognitive psychology with neurobiology to investigate the brain's role in mental processes.
Mental Representation
Mental Representation
Mental representations are internal representations of the world, like images or concepts.
Mental Operations
Mental Operations
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Levels Of Mental Representation
Levels Of Mental Representation
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Posner's Experiment
Posner's Experiment
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Mental Representation Transformation
Mental Representation Transformation
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Stimulus Onset Asynchrony (SOA)
Stimulus Onset Asynchrony (SOA)
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Neurological Lesions: Studying Cognition
Neurological Lesions: Studying Cognition
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Cognitive Dysfunction
Cognitive Dysfunction
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Neuropsychology
Neuropsychology
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Lesion Studies
Lesion Studies
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Single Dissociation
Single Dissociation
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Double Dissociation
Double Dissociation
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Traumatic Brain Injury (TBI)
Traumatic Brain Injury (TBI)
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Epilepsy
Epilepsy
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Functional Neurosurgery
Functional Neurosurgery
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Callosectomy
Callosectomy
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Lobotomy
Lobotomy
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Deep Brain Stimulation (DBS)
Deep Brain Stimulation (DBS)
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Prefrontal Cortex
Prefrontal Cortex
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Perceptual Memory
Perceptual Memory
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Semantic Memory
Semantic Memory
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Double Dissociation in Task Designs
Double Dissociation in Task Designs
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Group vs. Individual Studies: Variations in Lesions
Group vs. Individual Studies: Variations in Lesions
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Case Studies in Cognitive Neuroscience
Case Studies in Cognitive Neuroscience
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Specific Anomia
Specific Anomia
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Electrophysiological Measurements
Electrophysiological Measurements
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Transcranial Magnetic Stimulation (TMS)
Transcranial Magnetic Stimulation (TMS)
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Virtual Lesions: Disrupting Brain Activity
Virtual Lesions: Disrupting Brain Activity
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Limitations of TMS
Limitations of TMS
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Magnetoencephalography (MEG)
Magnetoencephalography (MEG)
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Mental Operations in Cognitive Psychology
Mental Operations in Cognitive Psychology
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Sternberg Memory Task
Sternberg Memory Task
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Encoding
Encoding
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Comparing in Sternberg Task
Comparing in Sternberg Task
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Decision Making
Decision Making
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Responding
Responding
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Serial Memory Search
Serial Memory Search
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Limited Information Processing Capacity
Limited Information Processing Capacity
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Stroop Task
Stroop Task
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Dual Tasks
Dual Tasks
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Single Cell Recordings
Single Cell Recordings
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Awake Task Performing Single Cell Recordings
Awake Task Performing Single Cell Recordings
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Genetic Manipulations in Cognitive Research
Genetic Manipulations in Cognitive Research
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Knock-Out Studies
Knock-Out Studies
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Knock-In Studies
Knock-In Studies
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Study Notes
Cognitive Neuroscience Methods
- Cognitive Psychology vs. Cognitive Neuroscience: Cognitive Psychology examines mental operations, assuming brains extract and process environmental information before action. Cognitive Neuroscience goes further, associating mental operations with brain areas, neuronal interactions, and neurotransmitters.
Methods for Delineating Mental Representations and Operations
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Mental Representations: Mental representations exist in different forms (e.g., physical, phonetic, categorical aspects of letters). Processing speed varies depending on the representation accessed. Different representations have varying complexities.
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Mental Transformations: Representations are transformed during processing. Posner demonstrated this using stimulus onset asynchrony, where delays reduce reaction time differences between different representation types (e.g., physical vs. phonetic), showing transformations occur.
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Mental Operations: Tasks are broken down into subtasks. The Sternberg memory task (identifying if a letter was in a set) showed that memory search is serial, with reaction time linearly increasing with the number of items in memory.
Information Processing Limits
- Limited Capacity: The Stroop effect illustrates that information processing has limits (e.g., difficulty ignoring distracting information). Dual tasks demonstrate similar limits, as added tasks increase reaction times and errors.
Experimental Techniques
Animal Research
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Single-Cell Recordings: Micro-electrodes measure the electrical activity of individual neurons in anesthetized and awake animals. This reveals the neural basis of perception, attention, memory and decision-making.
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Multi-Electrode Recordings: Advanced technology allows simultaneous recording from many electrodes to study neural networks, not just single cell activity.
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Genetic Manipulations: "Knock-out" studies disable genes, while "knock-in" studies insert genes. Viral vector manipulation allows targeted gene insertion or conditional expression in specific brain cells. This gives insight into genes, molecules, and cell types associated with cognitive functions.
Human Pathology (Neurology)
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Brain Lesions: Brain injuries (from war, accidents, or disease) provide insights into relationship between brain areas and cognitive deficits. Localized lesions from precise injuries provide more focused information.
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Cognitive Dysfunction: Studying patients with specific cognitive problems due to lesions allows scientists to associate behaviour with specific brain areas.
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Group vs. Individual Studies: Group studies reveal commonalities while case studies detect subtle deficits.
Functional Neurosurgery
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Lesions as Insights: Focal brain tissue removal in epilepsy patients provides insights into how specific brain areas contribute to cognitive functions.
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Brain Imaging: Modern brain imaging techniques allow direct mapping of affected areas, crucial for analyzing and correlating brain damage and cognitive defects.
Single vs. Double Dissociations
- Single Dissociation: One patient group shows deficit in Task A, but not Task B; the other group shows no issues. Inferences are limited.
- Double Dissociation: Two patient groups exhibit selective deficits at two tasks. This is more powerful because neither task is more difficult.
Measuring Electrical Brain Activity Non-invasively
- EEG and MEG: These techniques measure electrical activity directly, giving excellent temporal resolution (but poorer spatial resolution) to track neuronal processing in relation to tasks.
Virtual Lesions
- Transcranial Magnetic Stimulation (TMS): Briefly disrupts normal cortical processing in healthy subjects, serving as a virtual lesion. Temporal and spatial resolution is important here for creating targeted "virtual disruptions".
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