CNS Terms Flashcards
Definition of
frontal lobe (position)
front/top (in front of central sulcus)
Definition of
Bottom-up selective action
Rapid, automatic notice of most salient stimuli; “vetoes” top-down (volitional) control
Definition of
Unimodal association cortex
Association cortex with 1 input source
Definition of
anterolateral system
fibers from spinal cord to thalamus & brainstem, for pain & temperature
Definition of
spinothalamic tract
fibers from spinal cord to thalamus
Definition of
brainstem
midbrain, pons, medulla
Definition of
gyri
ridges on cortical surface - increase surface area for cell bodies
Definition of
Thalamus LGN (abbreviation, def)
Thalamus Lateral Geniculate Nucleus; where optic nerves synapse in the brain
Definition of
Reticular formation
loose network of neurons in brain stem, for Level of Consciousness
Definition of
diencephalon
hypothalamus & thalamus (& subthalamus)
Definition of
forebrain
diencephalon
Definition of
Left-side spatial neglect
Inability to process objects in left half of visual field; results from lesion in right-side of parietal association areas
Definition of
occipital lobe (position)
back, above cerebellum
Definition of
Apraxia
Clumsiness; results from lesion in motor association cortex
Definition of
sulci
grooves on cortical surface - increase surface area for cell bodies; separate cortical lobes
Definition of
Wernicke’s aphasia
Non-sensical speech, made-up words, lack of comprehension (fluency, syntax, grammar, word-structure intact); results from lesion in Wernicke’s area
Definition of
Tactile agnosia
Inability to make sense of stimuli; results from lesion in sensory association cortex
Definition of
sclera
outer layer of eyeball, continuous with cornea
Definition of
Conduction aphasia
Difficulty repeating words back (language production & comprehension individually intact); results from lesion in arcuate fasciculus
