Cortex Flashcards
Frontal Lobe Functions
- voluntary movement
- language production (left)
- motor prosody (right)
- comportment
- executive funciton
- motivation
Temporal Lobe Functions
- audition
- language comprehension (left)
- sensory prosody (right)
- memory
- emotion
Parietal Lobe Functions
- tactile sensation
- visuospatial function (right)
- attention (right)
- reading (left)
- writing (left)
- calculaiton (left)
Occipital Lobe Functions
- vision
- visual perception
- visual recognition
Motor Aprosody
- failure to inflect speech with emtion
- results from lesion of right inf. frontal gyrus
Frontal Lobe Syndromes
- disinhibition
- executive dysfunction
- apathy
Temporal Lobe Lesions
- minor effects on audition
- major effects on language, prosody, memory, emotion
Wernicke’s Aphasia
-fluent, paraphasic speech with impaired auditory comprehension, repetition, and naming
Sensory Aprosody
- anaolgous to Wernicke’s aphasia
- inability to comprehend the prosody of others
Limbic Lesions
-disturb emotional function
Parietal Lobe Lesions
- produce deficits in tactile sensation and cognition
- visuospatial dysfunction
- inattention to contralateral space (R parietal with L hemineglect)
Occipital Lobe Lesions
-visual field deficits: hemianopia and quadrentoanopia
Visual Agnosia
-failure to recognize objects that are adequately seen
Hemispheric Disconnection
- effects are generally mild
- L hand anomia
- agraphia
- apraxia
Lateral Premotor Cortex
- aka ventral motor cortex
- responsible for learned movements in response to external stimuli (trained dog)
- also plans movements that are to be executed with delay (i.e. conforming your hand to the shape you are going to grasp)
Supplementary Motor Cortex
-involved in rehearsing movements in your head
Primary Motor Cortex
-Memorized tasks that are performed for a sufficiently long time shift from being controlled in the supplementary motor cortex and are eventually controlled by the primary motor cortex
Central Pattern Generator
- located in spinal cord
- controls the relative timing of motor output and is subject to control by brainstem and motor cortex
