Sensory Biology

Course Description

Sensory Biology is for upper-level undergraduate students interested in learning how humans and animals sense their environments and how these senses affect behavior and survival. UWF states the material is broadly applicable to students interested in species ecology, human and animal health, biomedical science, marine biology, general biological research and psychology, and that the course is primarily discussion-based, analyzing classical and current research articles.

Within the SCNS taxonomy, PCB is the Process Biology prefix. The University of West Florida publishes this at 3 semester hours through the Department of Biology, College of Science and Engineering. It is offered at approximately 2 Florida institutions.

⚠⚠ This is a discussion-based seminar built on primary research articles, and that changes how you must prepare. There is no lecture to fall behind and catch up on. Arriving without having read the paper is immediately visible and wastes everyone's session — including yours.

The format is also the most valuable thing in the course. Reading a primary paper critically, identifying what it actually showed as against what it claimed, and defending a reading out loud are the core skills of graduate study and of any research career. Very few undergraduate courses practise them directly.

⚠ The subject is a good vehicle for it. Sensory biology spans mechanisms that are genuinely surprising — electroreception, magnetoreception, echolocation, infrared sensing, polarised light vision — and several of them are areas where the science is unsettled and the papers openly disagree. That is far better discussion material than a settled consensus.

Note the prerequisite waiver below — UWF explicitly allows entry without the stated prerequisite by department permission, which is unusual and worth knowing.

⚠ The contact-hour figure is derived — the University of West Florida publishes none

UWF's catalog publishes a credit value in semester hours, the college and department, prerequisites and co-requisites, and fee notices. It does not publish contact hours, a lecture and laboratory split, or terms of offering for any course. Every contact-hour value in a UWF guide in this repository is derived. The figure applies the standard lecture convention of 15 contact hours per credit, giving 45 hours for 3 semester hours. Confirm the meeting schedule with the department.

Learning Outcomes

Required Outcomes

• Describe the general principles of sensory reception and transduction.
• Describe receptor potentials, adaptation, and sensory coding.
• Describe how sensory information is transmitted and processed centrally.
• Describe the structure and function of the visual system.
• Describe photoreception, colour vision, and its variation across animals.
• Describe polarised light detection and ultraviolet vision.
• Describe auditory mechanisms and their variation across animals.
• Describe echolocation and its adaptations.
• Describe mechanoreception, touch, and proprioception.
• Describe the lateral line system and hydrodynamic sensing.
• Describe chemoreception including olfaction and taste.
• Describe pheromone detection and chemical communication.
• Describe thermoreception including infrared sensing.
• Describe nociception and its relationship to pain.
• Describe electroreception and its ecological roles.
• Describe magnetoreception and the current state of the evidence.
• Relate sensory capability to ecology, behaviour, and survival.
• Describe sensory ecology in marine and terrestrial environments.
• Describe human sensory disorders and their mechanisms.
• Read a primary research article critically and identify its limits.
• Present and defend an interpretation of research findings in discussion.

Optional Outcomes

• Read and interpret a primary research paper in the field.
• Relate the material to a Florida ecosystem, organism, or health problem.
• Describe current research directions in the area.
• Describe how the material supports graduate or professional study.
• Seek undergraduate research experience related to the topic.

Major Topics

Required Topics

• Principles of sensory transduction
• Receptor potentials, adaptation, coding
• Central sensory processing
• The visual system
• Photoreception and colour vision
• Polarised and ultraviolet vision
• Auditory mechanisms
• Echolocation
• Mechanoreception and proprioception
• Lateral line and hydrodynamic sensing
• Olfaction and taste
• Pheromones and chemical communication
• Thermoreception and infrared sensing
• Nociception and pain
• Electroreception
• Magnetoreception and its evidence
• Sensory capability and survival
• Marine and terrestrial sensory ecology
• Human sensory disorders
• Critical reading of primary literature
• Discussion and defence of findings

Optional Topics

• Primary literature
• Florida applications
• Current research directions
• Graduate and professional preparation
• Undergraduate research

Resources & Tools

• The assigned research articles — in this course these are the text. Read each one twice: once for what was done, once for whether the conclusion follows.
• A sensory biology or neuroscience reference for background — Purves' Neuroscience or a comparative physiology text will cover most mechanisms; use it to fill gaps a paper assumes.
• Stevens' Sensory Ecology, Behaviour, and Evolution — the clearest single treatment of the ecological framing this course takes.
• PubMed and Google Scholar — free; following a paper's citations forward and backward is how you find out whether its claim held up.
• The Journal of Experimental Biology and Journal of Comparative Physiology A — through the UWF library; where most of this literature lives.
• Florida's marine and estuarine fauna as case material — free; sharks and rays are the classic electroreception system, sea turtles the classic magnetoreception one, and both are studied on this coast.
• NCBI (ncbi.nlm.nih.gov) — free; PubMed, GenBank, BLAST and the rest of the toolkit, used professionally rather than only pedagogically.
• A UWF librarian — included in enrolment; an hour on database searching pays for itself across a whole degree.

Career Pathways

• Biological technicians — SOC 19-4021; the common direct entry point with a bachelor's degree.
• Biological scientists — SOC 19-1020; ⚠ independent research roles generally require a doctorate, and this is worth knowing early rather than late.
• Medical and clinical laboratory technologists — SOC 29-2011; ⚠ note that Florida licenses clinical laboratory personnel, so a biology degree alone does not permit bench work in a clinical laboratory — see the MLS prefix guides.
• Biotechnology and pharmaceutical industry — research associate, quality control and manufacturing roles; molecular technique competence is the entry currency.
• Environmental and conservation science — SOC 19-2041; Florida Fish and Wildlife Conservation Commission, water management districts, the Florida Department of Environmental Protection, and consulting firms.
• Marine and coastal science — a genuine Florida strength, including NOAA, Florida Sea Grant, Mote Marine Laboratory and the estuarine programmes on the Gulf coast near UWF.
• Public health laboratories — the Florida Department of Health Bureau of Public Health Laboratories.
• Science teaching — SOC 25-2031; ⚠ Florida K-12 teaching requires state certification that a biology degree alone does not provide.
• Professional and graduate pathways — medicine, dentistry, veterinary medicine, physician assistant, pharmacy, and research doctorates. This prefix is the core of a pre-health undergraduate plan.
• ⚠ An honest note on laboratory experience. Coursework laboratories are necessary and not sufficient — undergraduate research with a faculty member is what distinguishes a competitive graduate or professional applicant, and it is arranged by asking, usually earlier than students think.

Special Information

⚠⚠ UWF explicitly allows this course WITHOUT the stated prerequisite

• UWF publishes: "Prerequisite is PCB 3063 (Genetics), however students may obtain department permission to take the course without the specified pre-requisite."
• ⚠ This is the reverse of the usual permission requirement, which restricts entry. Here the department is opening a door that the prerequisite field would otherwise close.
• The reason is visible in the description. UWF names psychology, marine biology and biomedical science among the intended audiences — students who may never take a genetics course. A rigid prerequisite would exclude exactly the people the course is built for.
• ⚠ The permission is not automatic and you must ask for it. Contact the Department of Biology before registration opens, and be ready to say what preparation you do have.
• Be honest with yourself about the gap. The waiver removes an administrative barrier, not the underlying content — a student with no cell biology or physiology background will find the mechanism sections hard and should plan to read ahead.

⚠ Offered concurrently with the graduate PCB5872

• UWF teaches this alongside PCB5872, with graduate students assigned additional work. The pattern is routine at UWF and is confined to 4000-level courses across the corpus.
• The effect on an undergraduate is a section with graduate students in it and reading pitched to work at both levels. Undergraduate requirements are lower by design — the differential is in the additional graduate work.
• ⚠ For a student considering graduate study it is a useful preview, and the instructor sees you working next to the standard you would be held to.

⚠⚠ The asterisk in a UWF prerequisite means the course may be taken at the same time

• UWF marks a concurrent course with an asterisk, defined on the catalog's Course Information page as: "This course may be taken prior to or during the same term."
• ⚠ A prerequisite written WITHOUT an asterisk must be completed first; one written WITH an asterisk may be taken in the same term. Reading an asterisked prerequisite as sequential adds a term for no reason.
• UWF also uses an explicit Co-requisite: field, which is the stricter form — conventionally meaning the same term rather than prior-or-same. Both notations appear in this prefix.
• Confirm with an advisor; the registration system, not the catalog text, is what enforces it.

⚠⚠ Biology laboratory safety

• Know the location of the eyewash, safety shower, fire extinguisher and spill kit before you start work. That is a real instruction rather than a formality.
• ⚠ Eye protection and a lab coat are required, closed shoes are required, and never eat, drink or store food in a laboratory.
• Microbiological work is conducted at the containment level the organism requires, and ⚠ cultures are never opened outside the appropriate containment. Everything is autoclaved or disinfected before disposal.
• ⚠⚠ Human tissue, blood and body fluids are handled under Standard Precautions and are treated as infectious regardless of source. Sharps go into a sharps container at the point of use, and needles are never recapped by hand.
• Chemical hazards are real in a molecular laboratory — some nucleic acid stains and fixatives are mutagenic or carcinogenic, and phenol and chloroform cause chemical burns. Read the safety data sheet before first use, not after.
• ⚠ Ultraviolet transilluminators cause eye and skin burns; use the shield.
• Report every spill, cut and exposure immediately, however minor it seems.
• Tell the instructor if you are pregnant or immunocompromised; several standard laboratory materials and organisms warrant substitution.

Course format and position in the curriculum

• Lecture with examinations and problem work.
• ⚠ No "permission is required" marking appears anywhere in the PCB prefix, unlike UWF's clinical health prefixes — enrolment is gated by prerequisites rather than by cohort admission.
• UWF publishes no contact hours, lecture and laboratory split, or terms of offering for any course. Confirm the offering pattern with the department.

How Florida course levels affect transfer

The first digit of an SCNS number denotes the year of offering, not transferability. Courses at the 1000 and 2000 levels transfer transparently between Florida public institutions, and 3000 to 4000 is unproblematic since both are upper division. The boundary that actually matters is 2000 to 3000, where lower-division credit generally cannot satisfy an upper-division requirement. ⚠ For biology the specific transfer hazard is the split-versus-integrated question: UWF numbers lecture and laboratory separately where many institutions use one C course, and SCNS equivalency does not cross numbers. Carry a syllabus, and expect a transfer evaluation of either half to be done by hand.

PCB4870 is 3 semester hours at the University of West Florida.