lecture 20: cerebral cortex Flashcards
which lobe contains the primary motor cortexf
frpotnal
which lobe contains the primary olfactory cortex
temporal lobe (piriform, uncus, anterior hippocampampal gyrus)
which lobe contains the primary gustatory cortex
insula
(frontal and parietal operculum)
which lobe contains the inferior gyrus with 3 distinct partition
frontal
which lobe contains the primary somatosensory cortex
parietal
which lobe contains the primary auditory
temporal (superior and transverse temporal)
which lobe contains the cortical components of the limbic system
F, P and T (cingulate gyrus and parahippocampal)
which lobe contains the primary visual cortex
occipital
which lobe contains the frontal eye fields
frontal
what are the main functional cortical area (6)
primary somatosensory
primary motor cortex
primary visual cortex
primary olfactory corte
primary gustatory cortez
primary auditory cortez
where is the primary motor cortex
pres central gyrus (frontal lobe)
=also on medial aspect of frontal lobe
where is the primary somatosensory cortex
post central gyrus (parietal)
=also on medial aspect of parietal lobe)
where is the primary visual cortex
surrounding and within the calcarine sulcus (occipital lobe)
=mostly medial
where is the primary auditory cortex
superior and transverse temporal gyrus (temporal lobe)
=within lateral sulcus
where is the primary olfactory cortex
mostly on medial.inferior aspects of piriform cortex (temporal lobe)
where is the primary gustatory cortex
anterior insula (frontal and parietal operculum)
what are the main association cortices (5 and 2 language ones)
1) premotor cortez
2) supplementary motor cortex
3) somatosensory association cortex
4) auditory association cortex
5) visual association cortex
brooks and wernickes
what blood vessel supplies brocas
middle cerebral
what blood vessel supplies wernickes
middle cerebral
what is the main function of the premotor and supplementary motor area
=planning and initiation of movement to then send to motor cortex
(ex: movements that require multiple muscles at once)
movements that require multiple muscles at once involve planning nd initiation from the motor or premotor area
premotor
true or false: a lesion to the premotor and supplementary cortex will lead to spastic paraylsys
false, it will not
rather it will lead to difficulty with coordination (not able to do complex motor movements such as piano)
a lesion to pre motor and supplementary motor area will cause what types of deficits
not spastic paralysis but rather it will lead to difficulty with coordination (not able to do complex motor movements such as piano)
is brocas associated with motor or parietal lobe
motor
what is the main function of the somatosensory association cortex
=analysis and recognition of somatosensory information (making sense of shape, texture, details)
analysis and recognition of sensory information (making sense of shape, texture, details) is what crotex
somatosensory association cortex
true or false: a lesion to the somatosensory association cortex will lead to inability to recognize complex objects in terms of tactile info
true
a lesion to the somatosensory association cortex will lead to what deficits
a lesion to the somatosensory association cortex will lead to inability to recognize complex objects in terms of tactile info
where is the main location of the somatosensory association cortex
superior parietal lobule and blends into the visual association area
what is the main function of the visual assocaiation cortex
helping identify colour, shapes, facial recognition
true or false: a lesion to the visual association cortex will lead to visual field deficits
false that is a lesion to the primary visual cortex
a lesion to the visual association cortex will lead to difficulties with what
a lesion to the visual association cortex will lead to difficulties with colour, shape, and facial recognition
what are the 2 streams of the visual association cortex
dorsal and ventral
where is the location of the auditory association crotex
superior temporal lobe
what is the function of the auditory association crotex
helps with localizing sounds, pitch, timing etc
a lesion to the auditory association cortex will lead to difficulties with what
difficulty interpreting pitch, location, timing, sequence of sounds
“where are how” of vision is associated with dorsal or ventral stream
dorsal
the “what” of vision is assocaited with ventral or dorsal stream
ventral
where is the dorsal stream of visual processing pathway
parietal lobe
where is the ventral stream of visual processing pathway
temporal lobe
the temporal lobe is associated with the dorsal or ventral stream
ventral
the parietal lobe is associated with the dorsal or ventral stream
dorsal
what is the general functions of the dorsal stream of the visual processing pathway
understanding where objects are in space to facilitate visually-guided actions/behaviours (analysis of the surrounding environment to facilitate navigation)
interaction with and manipulation of objects (hand eye coordination)
understanding where objects are in space to facilitate visually-guided actions/behaviours (analysis of the surrounding environment to facilitate navigation)
interaction with and manipulation of objects (hand eye coordination)
is the dorsal or ventral stream
dorsal
the dorsal stream uses information from the entire visual field or the centre of visual field
entire visual field (whole retina)
what is the general functions of the ventral stream of the visual processing pathway
involved in recognition and identification of visual stimulation
-colours, shapes, patterns, spatial relationships
involved in recognition and identification of visual stimulation
-colours, shapes, patterns, spatial relationships
is the ventral or dorsal strea
ventral
true or false: the ventral stream has close connections to the limbic system
true
the ventral stream uses information from the entire visual field or the centre of visual field
centre of visual field (landing on fovea/macula)
what are the general function of the multimodal association areas
to integrate and combine multiple sensory modalities for use in cognitive processes
what are the 3 types of multimodal assocaiteion areas
parietal multimodal
temporal multimodal
frontal multimodal
what is an example of a frontal multimodal association area
pre fontal cortex
will lesions to multimodal association areas lead to ipsialteral or contralateral deficits
contralaterion
what will lesions to multimodal association areas cause
a wide variety of complex cognitive, language and or sensory deficits
contralateral hemineglect syndrome is a problem with what multimodal association crotex
parietal multimodal assocaition cortex
awareness of self and space around you is facilitated by what multimodal association area
parietal
somatosensory info and visual info coming together is what multimodal association area
parietal
limbic info and visual info coming together is what multimodal association area
temporal multimodal association areas
facial recognition area is in what assocaitioncortex
temporal multimodal association areas
lesions to the temporal multimodal association areas can lead to what
inability to recognize faces objects
=agnosia
inability to recognize faces objects
=agnosia is associated with lesion to what multimodal area
temporal
true or false: the prefrontal cortex is a primary cortex
false, it is a multimodal area
what is the executive function of the prefrontal cortex
decision making based on past experiences and present environment
monitor behaviour
judgement and awareness
cognitive processess
decision making based on past experiences and present environment
monitor behaviour
judgement and awareness
cognitive processess
is associated with what multimodal area
prefrontal cortex
lesions to the prefrontal cortex lead to deficits in what
loss of ability to solve complex probelms
loss of ambition
short attention span
inappropriate social responses (aggression)
rapid mood swings
loss of ability to solve complex probelms
loss of ambition
short attention span
inappropriate social responses (aggression)
rapid mood swings
is associated with a lesion to where
prefrontal cortex
the limbic system is distributed through what lobes
frontal, parietal, and temporal lobes
what are the 4 major functions of the limbic cortex
homeostatsis, olfaction, memory, emotion
lesions to the limbic cortex lead to what deficits
damage related to specific regions of damage
ex: lesion to temporal lobe will lead to amnesia (memory), olfactory deficits, decreased fear/aggression
damage related to specific regions of damage
ex: lesion to temporal lobe will lead to amnesia (memory), olfactory deficits, decreased fear/aggression
is related with lesions to where
limbic cortex in temporal lobe
give examples of structures in the limbic cortex
amygdaloid body, hippocampus (dentate gyrus)
mamillary body, hypothalamus
languages cortices are located in the dominant or non dominantt hemisphere
dominant
are language cortices located in the right or left hemispheres
left
which is the motor speech area: broca or wernickes
broca
what is the location of the brocas area
pars opercularis and parts triangular of inferior frontal gyrus
pars opercularis and parts triangular of inferior frontal gyrus
is associated wihth brocas or wenicks
brocas
what is the location of the wernickes area
superior temporal gyrus, extending into ventral aspect of parietal lobe
superior temporal gyrus, extending into ventral aspect of parietal lobe is assocaited with brocas or wernickes
wernickes
what is the function of the brocas area
premotor area involved in controlling muscles for speech and writing
premotor area involved in controlling muscles for speech and writing is broca or wernickes
broca
directing motor language output is broca or wernicke
broca
is brocas a premotor area or a multimodal association area
premotor
is wernickes a premotor area or a multimodal association area
multimodal association area
are the broca and wernick connected
yes by arcuate fasciculus
what is the structure that connects brocas and wernickes
arcuate fasciculus
what is the function of the wernickes area
multimodal association area involved in language comprehension and expression of thoughts
multimodal association area involved in language comprehension and expression of thoughts is brocas or wernickes
wernickes
is directing language processing brocas or wernickes
wernickes
lesions to brocas area, wernickes area, the arcuate fasciculus, primary motor cortex and other language area result in what
aphasia
what are the 3 types of aphasia discussed in class
brocas apashia
wernickes aphasia
conduction aphasia
brocas aphasia is aka
non fluent aphasia
wernickes aphasia is aka
fluent aphasia
conduction aphasia is aka
associative aphasia
speech is not fluent, person can comprehend language, person cannot repeat words is brocas, wernickes or conductive aphasia
brocas
speech is fluent, person cannot comprehend language, person can’t repeat words is brocas, wernickes or conductive aphasia
wernickes apashia
speech is fluent, person can comprehend language, person can’t repeat words is brocas, wernickes or conductive aphasia
conductive aphasia
explain brocas aphasia
difficulty with speaking, writing and production of speech
difficulty initiation language (its choppy, haulting speech, syntax and grammar disorder)
difficulty with speaking, writing and production of speech
difficulty initiation language (its choppy, haulting speech, syntax and grammar disorder)
is what type of aphasia
brocas
explain wernickes aphasia
speech is fluent but cannot actually understand language
sounds gibberish
speech is fluent but cannot actually understand language
sounds gibberish
is what type of aphasia
wernickes
explain conduction aphasion
person can process language but cannot repeat words (usually damage to arcuate fasciluculus)
person can process language but cannot repeat words (usually damage to arcuate fasciluculus)
is what type of aphasia
conduction aphasia
damage to the arcuate fasciculus is usually assocaited with what type of aphasia
conduction aphasia
someone thinks “i want an apple” but says “i….i….ap…. apple…” is what type of aphasia
brocas
someone thinks “i want an apple” but says “marvel yet leen i hem” is what type of aphasia
wernickes
someone asks you to repeat “apple” but you can’t, what type of aphasia
conduction
true or false, in conduction aphasia fluency and comprehension is in tact
true