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Anything written in block quote like this is a related example.
The central nervous system is composed of the forebrain (cortex, basal ganglia, thalamus, hypothalamus), midbrain, hindbrain (pons, cerebellum, medulla), and the spinal cord (not part of the brain).
In terms of anatomical location:
Integrates sensory information from various modalities (particularly in regards to space). End location of dorsal (where) pathway in visual system. Parafoveal info and orientation. Can test this area using landmark test.
Landmark Task: Damage to posterior parietal causes impairment on landmark discrimination. Monkeys had to choose the covered foodwell closer to a tall cylinder (aka the landmark), which is positioned randomly.
Area of sensory receptors, like temperature, tactile perception, pain, and other sensory modalities like proprioception.
Involved with implicit memory (along with limbic system and striatum)
Space-based attention is located in inferior parietal
Includes a system of anatomically related structures that are essential for declarative memory (LTM).
Wernicke's area: Involved with comprehension of language.
Object-based attention is involved in STG.
Can be either object-based or space-based. Although they are not mutually exclusive possibilities.
Is like a spotlight (purely spatial representation of visual field) ( inferior parietal lobe)
Posner Cueing task: Cue above fixation of an arrow pointing left, right, or both. White target of fixation appears either to the left or right. ERP variant shows that attention modulates neural response despite physical stimulus staying the same, in which they are told to pay attention to either left or right side (still fixate center). More response to bar appearing in attended side.
Involves preattentive segmentation of the visual scene ( superior temporal gyrus)
Patients with neglect may copy images uniformly throughout visual field but only the right side of all objects
Duncan (1984): Outline box with another line superimposed across is presented, followed by mask. The box and line both had two possible properties, and subjects--when asked to judge two properties of same object--were much better in performance than for discerning a property of both box and line.
Egly (1994): Wanted to make clear whether both space and object-based attention can apply in the same situation. They used a modified spatial precuing paradigm. To measure space-based, they cued to one location within object and examined performance difference for the cued part of that object versus uncued part of same object. To measure object-based, the target might appear in either same or different object while being equally spaced apart.
Aphasia is the loss of ability to understand or express speech (tan tan tan).
Broca's aphasia: Inability in speech production
Wernicke's aphasia: Involved with comprehension of language. Aphasia here involves words making no sense and no syntax, but would sound fine to someone who does not comprehend the language the patient is trying to speak.
Patient HM |
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Had epilepsy and bilateral medial temporal lobectomy(inc half of hippocampus) - all seemed fine but he couldn’t form new long term memory, but implicit memory in tact. Threw wrench in long term memory and stm being monolithic idea. |
Temporal Spatial