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Matt Weeg - Southern Utah University. Cedar City, UT, US

Matt Weeg

Associate Professor of Biology | Southern Utah University

Cedar City, UT, UNITED STATES

Specializing in neuroethology, brain behavior, and neuroscience

Biography

Studying fish audiology and analyzing the effects of plants on human cardiovascular systems are two topics Dr. Matthew Weeg feels passionate about. Committed to undergraduate education excellence, Dr. Weeg is a Southern Utah University associate professor of biology and director of the Center of Excellence for Teaching and Learning, who enjoys spending time in the classroom teaching students.

Originally from Pocatello, Idaho, Dr. Weeg’s course lineup includes general biology, physiology, pathophysiology, neurobiology, and animal behavior. In addition to classroom teaching, he mentors student field research projects, providing experiential learning opportunities to students. Projects have included an investigation into the link between fire retardant and Parkinson’s disease, testing effectiveness of fish oil in treating asthma, and examining effects of plant compounds on cardiovascular physiology.

Dr. Weeg is actively involved in faculty development at SUU and serves as associate director for the Center for Excellence in Teaching and Learning. He earned his bachelor of science degree in biology at University of Idaho, and a Ph.D. in neurobiology and behavior at Cornell University. Previously, he taught at Colorado State University, Michigan Tech University, and Penn State Altoona.

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Industry Expertise (3)

Education/Learning

Renewables and Environmental

Research

Areas of Expertise (17)

Animal Behavior

Audition

Biology

Brain Behavior

Cardiovascular Physiology

Cognitive Neuroscience

Communication & Behaviour

Effects of Plants on Cardiovascular System

Fish Audiology

Human Pathophysiology

Human Physiology

Lateral Line

Neuroethology

Neuroscience

Pathophysiology

Physiology

Vertebrate Physiology

Education (2)

University of Idaho: B.S., Biology

Cornell University: Ph.D., Neurobiology and Behavior

Accomplishments (1)

SUU Influencer Award

Recognized for his dedicated persistence in working with undergraduates on research.

Affiliations (2)

  • American Physiological Society
  • Center of Excellence for Teaching and Learning

Media Appearances (1)

How Fish Hear And Make Sounds At Same Time

Science Daily  online

2005-07-05

The study marks the first time that scientists have found a direct line of communication between the part of a vertebrate's brain that controls the vocal muscle system and the part of the ear that hears sound. The researchers believe that understanding the auditory system of the plainfin midshipman fish (Porichthys notatus ) -- a 6- to 10-inch fish found along the coastline from Alaska to California -- will offer insights into how other vertebrates -- including humans -- hear.

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Research Grants (4)

Enhancing biodiversity, water conservation, and urban agriculture through green roof infrastructure

National Science Foundation $15,807

2015

Travel funds to attend the American Physiological Society Intersociety Meeting

Southern Utah University $1,372

2014

The neural basis of aggression in Siamese fighting fish

Southern Utah University $1,676

2013

Identification of amphibian species most at risk from climate change

Pennsylvania Department of Conservation and Natural Resources $30,000

2010

Articles (8)

A Reliable, Non-Invasive Technique for Measuring Growth in Tadpoles Exposed to Salt

Environmental Toxicology and Pharmacology

Matthew S. Weeg, Jacqualine B. Grant

The use of chemical de-icers raises salt levels in roadside streams and ponds, which has adverse effects on tadpole development. Experiments on the effects of de-icers on tadpole development are often hampered by difficulties measuring body size without introducing handling stress that may skew results or cause unintended mortality. We have found a linear relationship between surface area and body mass in tadpoles that is unaffected by exposure to salt. Measuring surface area is therefore a suitable technique whose use should be encouraged when investigating the effects of salt exposure on tadpole growth and development.

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The Effect of Umbellularia californica Essential Oil on Blood Vessel Diameter in Frogs

American Journal of Undergraduate Research

Holden M. Wagstaff, Stephan R. Maman, Mary Jo Tufte, & Matthew S. Weeg

Plant essential oils contain many chemicals that are physiologically active in vertebrates. Terpenoids, which represent the largest category of these compounds, have been shown to lower blood pressure by reducing cardiac output and causing vasodilation. Most studies on the vasoactivity of terpenoids have been done on aortic rings and mesenteric artery preparations, and little is known about their effects on microvasculature.

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The Effects of Salt on Anti-Predator Escape Behaviors and Size in Green Frog Tadpoles

95th ESA Annual Meeeting

George A. Samra, Matthew S. Weeg, and Jacqualine B. Grant

2010-11-05

In many regions of the US, salts are used to clear roads of snow and ice in winter. These salts contaminate runoff and significantly increase the salinity of roadside ponds, which can have both direct and indirect effects on tadpole mortality. Toxicology studies have shown that sufficiently high salt concentrations are lethal to tadpoles, thus directly contributing to tadpole mortality. Less is known about how sub-lethal salt concentrations may affect tadpole behavior and thus contribute indirectly to mortality. Tadpoles exhibit a characteristic anti-predator escape behavior that consists of turning the head and swimming in the opposite direction from a predator, thus increasing the chances of surviving a predation attempt. The escape response is mediated by the lateral line, a sensory system that detects water movement.

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Vocal Pathways Modulate Efferent Neurons to the Inner Ear and Lateral Line

The Journal of Neuroscience

Matthew S. Weeg, Bruce R. Land and Andrew H. Bass

2005-06-05

All sonic vertebrates face the problem of sound production interfering with their ability to detect and process external acoustic signals, including conspecific vocalizations. Direct efferent inputs to the inner ear of all vertebrates, and the lateral line system of some aquatic vertebrates, represent a potential mechanism to adjust peripheral sensitivity during sound production. We recorded from single efferent neurons that innervate the inner ear and lateral line in a sound-producing teleost fish while evoking fictive vocalizations predictive of the temporal features of natural vocalizations.

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Frequency Response Properties of Lateral Line Superficial Neuromasts in a Vocal Fish, with Evidence for Acoustic Sensitivity

Journal of Neurophysiology

Matthew S Weeg , Andrew H Bass

2002-09-01

The mechanosensory lateral line of fish is a hair cell based sensory system that detects water motion using canal and superficial neuromasts. The trunk lateral line of the plainfin midshipman fish, Porichthys notatus, only has superficial neuromasts. The posterior lateral line nerve (PLLn) therefore innervates trunk superficial neuromasts exclusively and provides the opportunity to investigate the physiological responses of these receptors without the confounding influence of canal organs. We recorded single-unit activity from PLLn primary afferents in response to a vibrating sphere stimulus calibrated to produce an equal velocity across frequencies. Threshold tuning, isovelocity, and input/output curves were constructed using spike rate and vector strength, a measure of phase locking of spike times to the stimulus waveform.

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Central Lateral Line Pathways in a Vocalizing Fish

National Library of Medicine

Matthew S. Weeg, A H Bass

The organization of the central lateral line pathways in the midshipman fish, Porichthys notatus, was identified following biotin injections into physiologically identified sites in the lateral line-recipient nucleus ventrolateralis in the midbrain. Retrogradely filled neurons are located primarily in nucleus medialis, the principal termination site of lateral line nerve afferents in the medulla, whereas terminal fields are mainly identified in isthmal (nucleus praeeminentialis) and diencephalic (posterior thalamic) nuclei. Compared to other teleosts, nucleus medialis has a distinctive cytoarchitecture in that most of its somata are confined to a dense cell plate adjacent to the fourth ventricle.

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Directionality and Frequency Tuning of Primary Saccular Afferents of a Vocal Fish, the Plainfin Midshipman (Porichthys notatus)

Journal of Comparative Physiology A volume

M. Weeg, R. Fay, A. Bass

While particle motion is thought to directly stimulate the inner ear of most fish species, it is difficult to measure and might not be predictable from pressure measurements in a small tank. It is therefore important to replicate experiments conducted relative to pressure measurements using stimuli of known particle motion, to ensure that unmeasured components of the stimulus field do not produce misleading frequency response profiles.

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A Reliable, Non-Invasive Technique for Measuring Growth in Tadpoles Exposed to Salt

Environmental Toxicology and Pharmacology

Matthew S. Weeg, Jacqualine B. Grant

The use of chemical de-icers raises salt levels in roadside streams and ponds, which has adverse effects on tadpole development. Experiments on the effects of de-icers on tadpole development are often hampered by difficulties measuring body size without introducing handling stress that may skew results or cause unintended mortality. We have found a linear relationship between surface area and body mass in tadpoles that is unaffected by exposure to salt. Measuring surface area is therefore a suitable technique whose use should be encouraged when investigating the effects of salt exposure on tadpole growth and development.

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Courses (13)

BIOL 1610 General Biology I

It provides a basic foundation in the areas of biochemistry, organization and function of cells as well as the transmission of genetic information.

BIOL 1615 General Biology Lab I

Lab to accompany BIOL 1610.

BIOL 2170 Intro Human Pathophysiology

Introduction to Pathophysiology for the health sciences student. Using a systematic approach to cellular and then organ system changes, students will gain an understanding of physical changes, methods of evaluating, diagnosing and treating health alterations.

BIOL 2420 Human Physiology

Systematic study of the functions of the human body from the cellular to the systems.

BIOL 2425 Human Physiology Lab

Lab to accompany BIOL 2420.

BIOL 3270 Vertebrate Physiology

Study of mechanisms of function of major organ systems in the vertebrate body, especially the human, with emphasis on the cellular and molecular level.

BIOL 3275 Vertebrate Physiology Lab

Lab to accompany BIOL 3270.

BIOL 4400 Neurobiology

An introduction to the structure and function of the nervous system. Topics will include cellular neurobiology, how organisms sense and respond to environmental stimuli, and cognitive neuroscience.

BIOL 4410 Animal Behavior

Study of adaptive value of animal behavior and behavioral diversity, including foraging, territoriality, communication, mating systems, sexual selection and social behavior, with emphasis on evolutionary and ecological interpretations.

BIOL 4830 Individual Study

Individual study of topics in biology arranged by contract with an appropriate faculty supervisor.

BIOL 4840 Cooperative Education

Observation and activities in professional practice situations on or off campus arranged by contract with an appropriate faculty supervisor.

BIOL 4850 Undergraduate Research

Original lab or field research in biology arranged by contract with an appropriate faculty supervisor.

BIOL 4890 Internship

An off-campus experience with an employer, agency, or organization that will provide hands-on experiences. Internships must be initiated by a contract between the student, the provider, and the faculty advisor.