random hosh posh of psyche stuff Flashcards
What is simultagnosia?
inability to integrate a visual scene to perceive it s a whole
What is Gerstmann syndrome?
agraphia, calculation difficulties, right-left disorientation, and finger agnosia. Related to dominant parietal lobe lesions
What is prosopagnosia?
inability to recognize faces in the presence of preserved recognition of other objects (possible due to the disconnect of the left inferior temporal corticies from the visual association area in the left parietal lobe
Balint syndrome
bilateral parieto-occipital lesions. triad: optic ataxia (inability to direct optically guided movements) oculomotor apraxia (inability to direct gaze rapidly), and simultanagosia (inability to integrate a visual scene to perceive it as a whole)
Anton syndrome
inability to acknowledge blindness- bilateral occipital lobe lesions
associative visual agnosia
inability to name or use objects despite the ability to draw them. caused by bilateral medial occipitotemporal lesions
How do triptans work (ie on what receptor?
target serotonin receptors 5-HT-1D
What serotonin receptors are targeted by risperidone?
5-HT7
What kinds of deficits are seen with lesions in the dorsolateral area of the frontal lobe?
-defects in planning, monitoring, flexibility and motivation. May be inattentive, undermotivated, unable to plan new cognitive activity, and linger on trivial thoughts. May echo examiner’s questions
What kinds of deficits are seen with lesions in the dorsolateral area of the frontal lobe?
-defects in planning, monitoring, flexibility and motivation. May be inattentive, undermotivated, unable to plan new cognitive activity, and linger on trivial thoughts. May echo examiner’s questions
When is flumazenil used, and what is the most serious potential side effect?
- used to counteract the effects of benzos
- can precipitate seizures
Which tricyclic anti-depressant gives the most anti-cholinergic side effects?
amitriptyline
What is the mechanism of disulfiram?
inhibition of acetaldehyde dehydrogenase. EtOH ingestation causes buildup of acetyaldehyde, which causes vomiting, nausea, tachycardia, flushing. can also have these rxns with OTC cough and cold meds
What medication can be used to improve tx outcomes for ppl with alcohol dependence?
acamprosate
What medication is the best tx for psychotic symptoms in pts with parkinson’s disease?
clozapine
How is sleep terror disorder treated?
diazepam in small bedtime doses may reduce/eliminate attacks
(sleep terror disorder- partial arousal, screams, motor agitation, disorientation, autonomic arousal during transition to REM sleep seen especially in kids. Usually no tx needed)
What are the 4 type of waves seen in EEG?
- Alpha: 8-13 hz, seen with relaxation/closed eyes
- Beta: 13-30 hz. linked with motor behavior; attenuated with active movements. low amplitude beta waves seen with active concentration or anxiety. Predominates in alter
Rhythmic beta seen with benzos.
What are the 4 type of waves seen in EEG?
- Alpha: 8-13 hz, seen with relaxation/closed eyes
- Beta: 13-30 hz. linked with motor behavior; attenuated with active movements. low amplitude beta waves seen with active concentration or anxiety. Predominates in alert ppl
Rhythmic beta seen with benzos. - Delta: 3.5-4 hz. high amplitude slow waves. seen in adults during slow wave sleep. seen in babies. May be seen w/ some lesions
- theta 4-7 hz: seen in young kids, seen in drowsiness/mediation/creative states
What are the 4 type of waves seen in EEG?
- Alpha: 8-13 hz, seen with relaxation/closed eyes
- Beta: 13-30 hz. linked with motor behavior; attenuated with active movements. low amplitude beta waves seen with active concentration or anxiety. Predominates in alert ppl
Rhythmic beta seen with benzos. - Delta: 3.5-4 hz. high amplitude slow waves. seen in adults during slow wave sleep. seen in babies. May be seen w/ some lesions
- theta 4-7 hz: seen in young kids, seen in drowsiness/mediation/creative states
How can EtOH and benzos interact?
can cause extreme resp suppression
EtOH increases the binding of benzos to the benzo-binding site- makes them even more dangerous
How might syphilis appear on MRI?
chronic infections often appear as characteristic enhancement of the meninges at the base of the brain
What medications can be therapeutically used to reduce sex drive?
SSRIs, medroxyprogesterone acetate in men
