PSYC 2410 Study Guide - Midterm Guide: Metabolic Waste, Natural Selection, Franz Nissl

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Published on 9 Oct 2012
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BNS Midterm #1 2/11/2012 12:59:00 PM
Lecture Intro, Anatomy, Research Methods, Evolution.
CHAPTER ONE- Biopsychology
Biopsychology
Neuroscience: the scientific study of the nervous system
o Neurons: cells that receive and transmit electrochemical signals
Brain has 100 billion neurons and trillions of connections
brain is a plastic (changeable) grows and changes in response to
genes and experiences
Biopsychology the study of the biology of behaviour.
o Developed into a discipline in the 20th century (still young)
o „The Organization of Behvaiour‟ by D.O Hebb played major role:
developed the first comprehensive theory of how complex
psychological phenomena, might be produced by brain activity.
o Evolutionary perspective: thinking of the environmental pressures that
likely led to evolution of our brains & behaviour.
Biopsychology & other disciplines
D.O.Hebb organization & behaviour
o First comprehensive theory of how complex (perception, emotion,
memories) might be produced by brain activity
Biopsychology integrates knowledge from other neuroscience disciplines &
applies it to the study of behaviour.
o Neuroanatomy study of the structure of the nervous system.
o Neurochemistry study of the chemical bases of neural activity.
o Neuroendocrinology study of interactions between the nervous &
endocrine systems.
o Neuropathology study of nervous system disorders.
o Neuropharmacology study of the effects of drugs on neural activity.
o Neurophysiology study of the functions/activities of the nervous system.
Type of research
Human & nonhuman Subjects:
o Human brains:
follow instructions, report experiences, cheaper
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more ethical restraints
brains differ from nonhumans in terms of overall size and the
extent of their cortical development (more quantitative)
o Non-human brians:
Simpler brains & behaviour
(likely to reveal fundamental brain-behaviour interactions)
Comparitive approach understand biological phenomena by
comparing them different species .
Less ethical restrictions
More expensive, require the highest standards of care
Experiments & non-Experiments
o Experiments:
Between-subjects design:
different group tested under different condition .
Within-subjects design:
test the same group of subjects under different
conditions.
Morgans Canon:
when there are several possible interpretations for a
behavioural observation, the rule is to give precedence to
the simplest one.
Ex. Coolidge effect: a copulating male who becomes incapable of
continuing to copulate with one sex partner can often recommence
copulating with a new sex partner (studied hamsters)
Altered experiment to get rid of confound variable of male
tiredness.
Measured lordosis (arched back, tail up posture of rodents)
Females copulated more with unfamiliar hamsters.
o Nonexperimental studies:
Quasiexperimental Studies:
studies of groups of subjects who have been exposed to
the conditions of interest in the real world.
Confound variable cannot be controlled
Ex. no random assignment to treatment
Case studies:
extensive studies on a single subject
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lack generalizability
Pure & applied research:
o Pure Research motivated primarily by the curiosity of the researcher
More vulnerable to vagaries of politic regulation, many don‟t
understand the drive for research without practical benefit.
o Applied Research intended to bring a direct benefit to mankind
6 Divisions of Biopsychology
1) Physiological psychology studies the neural mechanism of behaviour through
the direct manipulation of the brain in controlled experiments
o surgical/electrical brain manipulation
o lab animals
o pure research to contribute to theories of neural behaviour control.
2) Psychopharmacology focuses on the manipulation of neural activity and
behaviour with drugs
o drug manipulation
o mostly animals
o basic & applied research
3) Neuropsychology the study of the psychological effects of brain damage in
human patients.
o Effects of brain damage
o most applied.
o Case studies & quasiexperimental
o Focus is on the cerebral cortex (outer layer of the hemispheres.)
4) Psychophysiology studies the relation between physiological activity and
psychological processes in human subjects
o humans, typically non-invasive
o focuses on attention, emotion, information processing
o looks at activity in the autonomic nervous system (ANS)
regulates the bodies inner envronment.
ex. EEG, heart reate, BP
5) Cognitive neuroscience studies the neural bases of cognition (thought,
memory, attention).
o Newest division
o focus is on humans, must be non-invasive
o ex.fMRI, PET
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