Stahl's Essential Psychopharmacology
Neuroscientific Basis and Practical Applications
5th Edition
Author(s)Stephen M. Stahl
TEST BANK
1
Reference
Ch. 1 — Principles of Chemical Neurotransmission
Question Stem
A 28-year-old patient newly started on a GPCR-targeting
antidepressant reports increased anxiety and agitation during
the first week. Which neurobiologic explanation best accounts
for this early worsening of symptoms before clinical
improvement?
Options
A. Immediate changes in gene transcription leading to rapid
receptor upregulation.
B. Acute second-messenger and ion-channel effects preceding
,longer-term receptor adaptations.
C. Rapid synaptogenesis within days that transiently destabilizes
networks.
D. Immediate epigenetic modifications permanently altering
neurotransmitter synthesis.
Correct Answer
B
Rationales
Correct: Many psychotropic drugs initiate acute signaling (GPCR
→ second messengers → ion channel modulation) producing
early functional changes — these can transiently increase
anxiety before slower homeostatic receptor adaptations and
gene-expression changes produce therapeutic effects.
A (incorrect): Gene transcription changes are slower (days–
weeks), not immediate.
C (incorrect): Synaptogenesis is a longer-term process and does
not explain immediate early worsening.
D (incorrect): Epigenetic changes take time and are not the
mechanism of immediate symptom exacerbation.
Teaching Point
GPCR drugs cause rapid second-messenger effects that can
transiently worsen symptoms before slower gene changes.
Citation
Stahl, S. M. (2021). Stahl’s Essential Psychopharmacology (5th
ed.). Ch. 1.
,2
Reference
Ch. 1 — Excitation—Secretion Coupling
Question Stem
A nurse observes that a patient’s stimulant medication
increases heart rate and blood pressure shortly after dosing.
Which step of excitation–secretion coupling most directly
explains the rapid cardiovascular sympathetic response?
Options
A. Activation of nuclear transcription factors.
B. Voltage-gated calcium influx triggering neurotransmitter
release.
C. Chromatin remodeling and epigenetic changes.
D. Altered mRNA splicing increasing receptor variety.
Correct Answer
B
Rationales
Correct: Excitation–secretion coupling relies on action
potential–mediated opening of voltage-gated calcium channels;
calcium influx triggers rapid neurotransmitter release,
producing immediate sympathetic effects.
A (incorrect): Nuclear transcription factor activation is slow and
not responsible for immediate cardiovascular changes.
C (incorrect): Chromatin remodeling is long-term and unrelated
, to the acute pressor response.
D (incorrect): Alternative splicing affects longer-term protein
diversity, not the immediate release process.
Teaching Point
Voltage-gated Ca²⁺ influx is the key link between depolarization
and rapid transmitter release.
Citation
Stahl, S. M. (2021). Stahl’s Essential Psychopharmacology (5th
ed.). Ch. 1.
3
Reference
Ch. 1 — Neurotransmitters
Question Stem
A patient receiving a medication that increases synaptic
monoamine levels reports sexual dysfunction. Which feature of
neurotransmitter action best links increased synaptic
monoamines to this adverse effect?
Options
A. Volume transmission allowing diffuse influence on distant
circuits.
B. Retrograde transmission that exclusively reduces presynaptic
monoamine release.
C. The inability of monoamines to activate second messenger
Neuroscientific Basis and Practical Applications
5th Edition
Author(s)Stephen M. Stahl
TEST BANK
1
Reference
Ch. 1 — Principles of Chemical Neurotransmission
Question Stem
A 28-year-old patient newly started on a GPCR-targeting
antidepressant reports increased anxiety and agitation during
the first week. Which neurobiologic explanation best accounts
for this early worsening of symptoms before clinical
improvement?
Options
A. Immediate changes in gene transcription leading to rapid
receptor upregulation.
B. Acute second-messenger and ion-channel effects preceding
,longer-term receptor adaptations.
C. Rapid synaptogenesis within days that transiently destabilizes
networks.
D. Immediate epigenetic modifications permanently altering
neurotransmitter synthesis.
Correct Answer
B
Rationales
Correct: Many psychotropic drugs initiate acute signaling (GPCR
→ second messengers → ion channel modulation) producing
early functional changes — these can transiently increase
anxiety before slower homeostatic receptor adaptations and
gene-expression changes produce therapeutic effects.
A (incorrect): Gene transcription changes are slower (days–
weeks), not immediate.
C (incorrect): Synaptogenesis is a longer-term process and does
not explain immediate early worsening.
D (incorrect): Epigenetic changes take time and are not the
mechanism of immediate symptom exacerbation.
Teaching Point
GPCR drugs cause rapid second-messenger effects that can
transiently worsen symptoms before slower gene changes.
Citation
Stahl, S. M. (2021). Stahl’s Essential Psychopharmacology (5th
ed.). Ch. 1.
,2
Reference
Ch. 1 — Excitation—Secretion Coupling
Question Stem
A nurse observes that a patient’s stimulant medication
increases heart rate and blood pressure shortly after dosing.
Which step of excitation–secretion coupling most directly
explains the rapid cardiovascular sympathetic response?
Options
A. Activation of nuclear transcription factors.
B. Voltage-gated calcium influx triggering neurotransmitter
release.
C. Chromatin remodeling and epigenetic changes.
D. Altered mRNA splicing increasing receptor variety.
Correct Answer
B
Rationales
Correct: Excitation–secretion coupling relies on action
potential–mediated opening of voltage-gated calcium channels;
calcium influx triggers rapid neurotransmitter release,
producing immediate sympathetic effects.
A (incorrect): Nuclear transcription factor activation is slow and
not responsible for immediate cardiovascular changes.
C (incorrect): Chromatin remodeling is long-term and unrelated
, to the acute pressor response.
D (incorrect): Alternative splicing affects longer-term protein
diversity, not the immediate release process.
Teaching Point
Voltage-gated Ca²⁺ influx is the key link between depolarization
and rapid transmitter release.
Citation
Stahl, S. M. (2021). Stahl’s Essential Psychopharmacology (5th
ed.). Ch. 1.
3
Reference
Ch. 1 — Neurotransmitters
Question Stem
A patient receiving a medication that increases synaptic
monoamine levels reports sexual dysfunction. Which feature of
neurotransmitter action best links increased synaptic
monoamines to this adverse effect?
Options
A. Volume transmission allowing diffuse influence on distant
circuits.
B. Retrograde transmission that exclusively reduces presynaptic
monoamine release.
C. The inability of monoamines to activate second messenger
